（菽豆）入肾祛风散热利水下气活血解毒
黑大豆（专入肾）。味甘性平。色黑体润。按豆形象似肾。本为肾谷。而黑豆则尤通肾。
加以
盐引。则豆即能直入于肾也。时珍曰。豆有五色。惟黑豆属水性寒。肾为寒水之经。故能治
水消胀。下气制风热。而活血解毒。所谓同气相求也。故书有言服此令人泽肌补骨。止渴生
津。非其补肾之力欤。身面浮肿。水痢不止。痘疮湿烂。得此则消。非其入肾去水之力欤。
头项强痛。卒中失音。得此则除。非其制风之力欤。（此虚风也。若纯外风内中。则不须此
。）香港脚攻心。胸胁卒痛。单服此味则效。非其下气之力欤。热毒攻眼。乳岩发热。得
此则
愈。非其解热之力欤！便血赤痢。折伤堕坠。得此则良。非其活血之力欤。风瘫疮疥。丹毒
蛇
蛊。得此则化。非其解毒之力欤！然体润性壅。多服令人身重。（藏器曰。大豆生平。炒食
极热。煮食甚寒。作豉极冷。造酱及生黄卷则平。牛食之温。马食之冷。一体之中。用之数
变。）加甘草则解百药毒。
（菽豆）生则疏泄熟则作滞
黄大豆（专入脾）。按书既言味甘。服多壅气生痰动嗽。又曰。宽中下气。利大肠。消
水胀肿
毒。其理似属两岐。讵知书言甘壅而滞。是即炒熟而气不泄之意也。书言宽中下气利肠。是
即生冷未炒之意也。凡物生则疏泄。熟则壅滞。大豆其味虽甘。其性虽温。然生则水气未泄
。服之多有疏泄之害。故豆须分生熟。而治则有补泻之为别耳。（藏器曰。大豆生平。炒食
极热。）是以书载误食毒物。须生捣研水吐之。诸菌毒不得吐者。浓煎汁饮。试内痈及臭毒
腹痛。并与生黄豆嚼。甜而不恶心者是。即上部结有痈脓。及中臭毒发痧之真候。惟有痘后
余毒发痈。（炒黑研末。以青油调敷之。）并痘后风癣。（以豆壳煎汤洗。）痘后生疮。（黄豆
烧黑研末。香油调涂。）肿疡背疮等症。（生浸细磨。和滓炒热以敷。）则或煎汤炒黑为末以
治。用补则须假以炒熟。然必少食则宜。若使多服不节。则必见有生痰壅气动嗽之弊矣。豆
油辛甘而热。与豆气味稍别。能涂疮疥。解发疽。蒿烧灰。点恶痣。去恶肉。豆忌猪肉。
黑大豆（专入肾经）。味甘，性平。色黑且质地润泽。按豆子的形状似肾脏，本为肾之谷类食物，而黑豆则尤其能通达肾经。加上盐的引导作用，豆子便能直接入于肾经。李时珍说：豆类有五种颜色，只有黑豆属水性且性寒。肾为寒水之经，所以黑豆能治水、消胀、下气、制伏风热，并能活血解毒。这就是所谓的“同气相求”。所以医书说服用此药能使肌肤润泽、补益骨骼、止渴生津，这难道不是它补肾的功效吗？身体面部浮肿、水泻不止、痘疮湿烂，得到黑豆就能消退，这难道不是它入肾去水的功效吗？头项强痛、突然中风失音，得到黑豆就能消除，这难道不是它制伏风邪的功效吗？（此处指虚风。若是纯外感风邪内中，则不需要用此法。）香港脚（足部肿痛）攻心、胸胁突然疼痛，单服黑豆即见效，这难道不是它下气的功效吗？热毒攻眼、乳岩（乳房肿块伴发热）发热，得到黑豆就能痊愈，这难道不是它解热的功效吗？便血、赤痢、跌打折伤坠损，得到黑豆效果良好，这难道不是它活血的功效吗？风瘫、疮疥、丹毒、蛇蛊中毒，得到黑豆就能化解，这难道不是它解毒的功效吗？然而黑豆质地润泽、性质壅滞，多服会让人身体沉重。（陈藏器说：大豆生性平和，炒食极热，煮食甚寒，制成豆豉极冷，制成酱及生黄豆芽则性平；牛食之温，马食之冷。同一物体，用法不同变化极大。）加入甘草则能解百药之毒。
（大豆）生则疏泄，熟则作滞。
黄大豆（专入脾经）。按医书记载既说味甘，多服会壅滞气机、生痰、引发咳嗽；又说能宽中下气、利大肠、消水肿胀满和毒素。其道理看似矛盾。殊不知医书说甘味壅滞，是指炒熟后气机不泄的意思；医书说宽中下气利肠，是指生冷未炒的意思。凡物生则疏泄，熟则壅滞。大豆虽然味甘性温，但生的时候水气未泄，多服多有疏泄之害。所以豆子必须分生熟，治疗上则有补泻的区别。（陈藏器说：大豆生性平和，炒食极热。）因此医书记载误食毒物，须生捣研汁用水送服催吐；各种菌毒不能催吐的，浓煎汁饮用；试治内痈及臭毒腹痛，都让嚼生黄豆，若感觉甜而不恶心者，即为上部结有痈脓及中焦臭毒发痧的真实证候。唯有痘疹后余毒发痈，（用黑豆炒黑研末，用青油调敷）；以及痘后风癣，（用豆壳煎汤清洗）；痘后生疮，（用黄豆烧黑研末，香油调涂）；肿疡背疮等症，（生浸细磨，混合渣滓炒热敷贴）；则有的煎汤或炒黑为末来治疗。用于补益则须借助炒熟的豆子。然而必须少量食用才适宜。如果多服不节制，就必然出现生痰、壅气、动嗽的弊病了。豆油辛甘而热，与豆的气味稍有不同，能涂抹疮疥，解发疽之毒。蒿草烧成灰，点涂恶痣，去除恶肉。豆类忌与猪肉同食。
(Soybean) enters the Kidney channel, dispels wind, clears heat, promotes urination, directs Qi downward, invigorates blood, and resolves toxicity.
Black Soybean (specifically enters the Kidney channel). Flavor: sweet; Nature: neutral. Color: black; Texture: moist and glossy. According to its shape resembling the kidney, it is originally a grain of the Kidney. Among soybeans, black ones particularly communicate with the Kidney channel. When guided by salt, the bean can directly enter the Kidney channel. Li Shizhen stated: "Beans come in five colors; only black beans belong to Water nature and are cold in temperature. The Kidney is the channel of Cold Water; therefore, it can treat water disorders, reduce distension, direct Qi downward, control wind-heat, invigorate blood, and resolve toxicity. This is what is meant by 'like attracts like'." Thus, medical texts state that taking this substance makes the skin lustrous, nourishes the bones, stops thirst, and generates fluids. Is this not its power to tonify the Kidney? For bodily and facial edema, unremitting watery diarrhea, and wet, ulcerated chickenpox lesions, resolution occurs upon taking this. Is this not its power to enter the Kidney and eliminate water? For stiffness and pain in the head and neck, sudden loss of voice due to stroke, elimination occurs. Is this not its power to control wind? (This refers to deficient wind. If purely external wind strikes internally, this method is unnecessary.) For Hong Kong foot (podagra/swollen feet) attacking the heart, or sudden chest and hypochondriac pain, single administration of this substance yields efficacy. Is this not its power to direct Qi downward? For heat-toxicity attacking the eyes, or breast cancer (breast mass with fever), healing occurs. Is this not its power to clear heat? For hematochezia, bloody dysentery, fractures, and falls, good results are obtained. Is this not its power to invigorate blood? For wind-induced paralysis, sores and scabies, erysipelas, and snake/centipede venom, resolution occurs. Is this not its power to resolve toxicity? However, its moist texture and cloying nature mean excessive consumption causes heaviness of the body. (Chen Cangqi said: "Soybeans are naturally neutral. Roasted, they are extremely hot; boiled, very cold; made into fermented bean curd (douchi), extremely cold; made into paste or raw yellow sprouts, neutral. Cows eating them become warm; horses eating them become cold. Within one substance, usage varies greatly.") Adding Licorice Root (Gancao) resolves the toxicity of all medicines.
(When raw, Soybeans promote dispersion and excretion; when cooked, they cause stagnation.)
Yellow Soybean (specifically enters the Spleen channel). Medical texts state that although the flavor is sweet, excessive consumption leads to Qi stagnation, phlegm generation, and coughing. Yet other texts say it broadens the middle, directs Qi downward, benefits the large intestine, and reduces water retention, edema, and toxins. These principles seem contradictory. It is understood that when texts mention sweetness causing stagnation, they refer to the effect after roasting, where Qi does not disperse. When texts mention broadening the middle and directing Qi downward, they refer to the raw, unroasted state. Generally, substances when raw promote dispersion and excretion; when cooked, they cause congestion and stagnation. Although Yellow Soybean is sweet and warm in nature, when raw, its Water Qi has not dispersed, and excessive consumption may harm through excessive dispersion. Therefore, beans must be distinguished as raw or cooked, and treatments differ between tonification and purgation. (Chen Cangqi said: "Soybeans are naturally neutral; roasted, they are extremely hot.") Hence, texts record that for accidental ingestion of poisons, one should crush raw beans, grind them, and drink the water to induce vomiting. For various fungal toxins that cannot be vomited, a concentrated decoction should be drunk. To test for internal abscesses and foul-smelling toxin abdominal pain, chewing raw yellow soybeans is advised; if the taste is sweet without nausea, it indicates true signs of upper abscess formation or mid-jiao foul-toxin miasma. Only residual toxins from smallpox causing abscesses are treated by (roasting black beans, grinding to powder, and mixing with green sesame oil for application); wind-scales after smallpox are treated by (washing with decoction of bean husks); sores after smallpox are treated by (burning yellow soybeans to black, grinding to powder, and applying with sesame oil); swelling ulcers and back sores are treated by (soaking raw, grinding finely, mixing dregs, heating, and applying). Some are treated by decocting or roasting to powder. For tonification, cooked beans are required. However, they must be consumed in small amounts to be suitable. If taken excessively without restraint,弊端 such as phlegm generation, Qi stagnation, and coughing will inevitably appear. Soybean oil is pungent, sweet, and hot, differing slightly in aroma and flavor from the bean itself. It can be applied to sores and scabies, and resolves carbuncle toxins. Mugwort ash burned to gray can be used to cauterize malignant nevi and remove bad flesh. Beans are contraindicated with pork.