（本经中品）
【气味】咸，微温，有毒。
【主治】恶血，血瘀，痹气，破折血、在胁下坚满痛、月闭，目中淫肤，青翳白膜。
【核】曰∶生河内平泽，及人家积粪腐草朽木间。大如趾，身短节促，足长有毛，以背
滚行，乃捷于脚，久之化蝉而去。生木根桑树中者，曰木蠹，曰桑虫，身长足短，口黑无毛，
春
修治，采无时阴干，同糯米拌炒，至米焦黑，去身口肉分茸毛，并黑尘，分作三四截，研
粉用；亦可生用，取汁。用下乳汁，杂猪蹄作羹，两无别也。
【 】曰∶蛴谐齐；齐，垣屋两旁隰阪处也。螬谐曹；曹，庭榭东畔棘壤所也。故蛴螬
湿生无母，多在垣屋庭榭积壤腐木间。尔雅所谓 蛴；列子所谓乌足之根，是也。色黑褐亦
有外黄内黑者，身不及寸，腹文如蝎若蝉，故一名蝎，化复育、转玄蝉，离卑秽，应高洁，
吸风饮露，好鸣种子也。行以背，驶于足，复育腹行，玄蝉足行矣。本草指内外洁白之木蠹
桑虫，表里灰色之地蚕，蝤蛴者，谬矣。盖木蠹桑虫行以腹，地蚕若屈蠖之求伸，蝤蛴类蟋
蟀之促蹶，皆非行于背也。然则行身之背者督，起于下极之俞，并脊里，上风府入属于脑，
与任脉会于巅，蛴螬功力，力主督不会任，任内苦结，为恶血、为血瘀、为痹气、为折血在
胁下坚满痛，男子为七疝，女子为血闭瘕聚，仍使之任督交通，环周会极。盖肝开窍于目。
肝，木藏也，蛴螬兼木为食，若淫肤翳膜，皆目余眚，如木柏 菌然。螬食其余，何眚之有，
且也木系系风府，循督会任故功用特着。昔仲子食螬剩者半李，遂使耳有闻，目有见，信有
之矣。
【本经中品】
【气味】味咸，性微温，有毒。
【主治】恶血，血瘀（血液运行不畅或停滞），痹气（经络阻滞之气），折伤出血、胁下坚硬胀满疼痛、月经闭止，眼中淫肤（眼内眦赘生薄膜），青翳白膜（角膜云翳或白斑）。
【核】曰：蛴螬生于河内平原沼泽，以及人家堆积粪便、腐草朽木之间。体型大如脚趾，身体短小且节段紧凑，足长且有毛，靠背部滚动前行，比用脚行走更敏捷，久而久之化为蝉而离去。生长在桑树根部的，称为木蠹，又称桑虫，身体长而足短，口部黑色无毛。春季采集，修治时无固定时间，需阴干，与糯米拌炒，直至米粒焦黑，去除虫体及口部肉质的茸毛和黑尘，分成三四截，研成粉末使用；也可以生用，取汁液。用于通乳汁时，杂入猪蹄煮羹，效果与猪蹄无异。
【 】曰：蛴谐“齐”；齐，指垣墙房屋两旁低湿的坡岸处。螬谐“曹”；曹，指庭院廊榭东侧荆棘丛生的土壤处。所以蛴螬是湿气所生，没有母亲，多出现在垣墙屋宇、庭院廊榭积聚的土壤和腐木之间。这就是《尔雅》所说的蛴，也是《列子》所说的乌足的根，就是它。颜色黑褐，也有外黄内黑的，身长不到一寸，腹部纹理像蝎子又像蝉，所以又名蝎，化身为复育（蝉的幼虫），再转为玄蝉，远离卑污秽浊，顺应高洁，吸风饮露，喜好鸣叫并繁衍后代。爬行时用背部，比用脚快，复育阶段用腹部爬行，玄蝉阶段则用脚爬行。本草书中将内外洁白的木蠹桑虫，表里灰色的地蚕，以及蝤蛴混为一谈，这是错误的。大概因为木蠹桑虫用腹部爬行，地蚕像尺蠖那样屈伸前进，蝤蛴类蟋蟀那样短促跳跃，都不是用背部爬行。然而，运行于身体背面的经脉是督脉，起于下极之俞，沿脊里上行，过风府穴入属于脑，与任脉在头顶交会。蛴螬的功效，主要在于疏通督脉而不局限于任脉，任脉内部若有苦结，会导致恶血、血瘀、痹气、折伤出血在胁下坚满疼痛，男子患七疝，女子患血闭瘕聚，最终使其任督二脉交通，环周会极。肝开窍于目。肝属木藏，蛴螬兼食木类，若出现淫肤翳膜，都是眼睛的余疾，如同柏树生菌一样。蛴螬食用其残余部分，为何会有眼疾呢？况且木系联系风府，循行督脉交会任脉，所以功效特别显著。昔日仲景先生吃剩下的半颗李子里含有蛴螬，结果使得耳聪目明，确实有此事啊。
[Shennong Bencao Jing, Middle Category]
[Properties and Flavors] Salty, slightly warm, toxic.
[Indications] Evil blood (pathogenic blood stasis), blood stasis (stagnation of blood circulation), Bi qi (obstruction of Qi in collaterals), traumatic bleeding, hardness, fullness, and pain in the hypochondrium, amenorrhea, yin fu (epicanthal folds or pterygium-like growths) in the eyes, cyan cataracts (blueish corneal opacities), and white membranes (corneal leukoma).
[Nuclear Analysis] It is said: Siqiao lives in the plains and marshes of He River, as well as among accumulated feces, rotting grass, and decaying wood in human dwellings. It is as large as a toe, with a short body and compact segments, long hairy legs, and moves by rolling on its back, which is more agile than walking with feet. After a long time, it transforms into a cicada and departs. Those living in mulberry tree roots are called Mudu (wood-boring larvae) or Sangchong (mulberry worms), with long bodies and short legs, black mouths without hair. They are harvested in spring, processed at any time, dried in the shade, stir-fried with glutinous rice until the rice turns black, then the hairy flesh and mouth parts of the insect, along with black dust, are removed. The body is divided into three or four sections and ground into powder for use; it can also be used raw to extract juice. When used to promote lactation, mixed with pig trotters to make soup, the effect is indistinguishable from that of pig trotters alone.
[Commentary] It is said: "Si" harmonizes with "Qi"; Qi refers to the damp slopes on both sides of walls and houses. "Cao" harmonizes with "Cao"; Cao refers to the thorny soil on the east side of courtyard pavilions. Therefore, Siqiao is born from dampness without a mother, mostly found between accumulated soil and decaying wood in walls, houses, courtyards, and pavilions. This is what Er Ya calls Siqiao, and what Liezi calls the root of Wu Zu. Its color is black-brown, some are yellow outside and black inside, less than one inch long, with abdominal patterns resembling scorpions or cicadas, hence another name is Xie (scorpion). It transforms into Fuyu (cicada nymph), then into Xuan Chan (black cicada), leaving behind filth, aligning with purity, feeding on wind and drinking dew, fond of singing and reproducing. It crawls on its back, faster than using feet; Fuyu crawls on its belly, while Xuan Chan crawls on its feet. The Materia Medica erroneously equates the white-internal and white-external Mudu/Sangchong, the gray-internal and gray-external Di Can (earthworms), and Youqi. This is incorrect. Generally, Mudu and Sangchong crawl on their bellies, Di Can move like Hu (inchworms) stretching and contracting, and Youqi jump like crickets; none crawl on their backs. However, the vessel running along the back is the Du Mai (Governing Vessel), originating from Xiaji Shu, ascending along the spine, entering the brain via Fengfu, and meeting the Ren Mai (Conception Vessel) at the vertex. The efficacy of Siqiao primarily focuses on unblocking the Du Mai rather than just the Ren Mai. If there is stagnation in the Ren Mai, it leads to evil blood, blood stasis, Bi qi, traumatic bleeding causing hardness and pain in the hypochondrium, seven types of hernia in men, and blood closure and mass accumulation in women. Ultimately, it facilitates communication between Ren and Du meridians, circulating to the extreme point. The Liver opens into the eyes. The Liver is a Wood organ; Siqiao feeds on wood. Conditions like yin fu and cataracts are residual ailments of the eyes, similar to fungi growing on cypress trees. Since Siqiao consumes these residues, how could it cause eye diseases? Moreover, Wood connects to Fengfu, following the Du Mai to meet the Ren Mai, thus its function is particularly prominent. In the past, Zhongzi (Zhang Zhongjing) ate half a plum containing leftover Siqiao, resulting in clear hearing and vision, which is indeed true.