余幼承庭训，无时不以“与人为善”四字，冰兢于夙夜间。然尝恐浅见寡闻，不足以付
广济之怀。而医之为道，少小善病，每经历吴越，辄访高人异士，讲明而切究之。故尝宣于
口，笔于书，采于方，选于药，幸得此身完然无恙，迄今年五十而精神气力百倍。从前，盖
其所经验者，固已多矣。顾余尝谓人∶生而无济于人者，君子谓之虚生。苟徒自为调摄，而
秘藏不以告人，则黄帝岐伯之术，何以流传至今？而卢公扁鹊何以有不自医之说哉？故尝与
大兄尔介，仲兄彦方，精选药料，秘制丸散，若寸金丹、催生丸及太乙灵膏，普施广送，毫
不取其直，此固远近咸知者。然犹以为传药不如传方，盖传药则吾一家能辨，而传方则人人
可辨也。乃网罗旧闻，摭拾新编，几费采择，而后付诸剞劂，将以布诸海内，俾远乡僻壤之
家，咸得一目了然。思所以预防而疗治之，以无负余意。其有未曾经验者，概不录。书既成，
仍颜之曰∶《丹方类编》。盖吴门钱青抡先生旧有此书，沈子怀玉曾为重梓，而徐士 与慕琛、
吴尚采诸公皆有序。余征求原本不可得，倩友抄录一通。今踵刻多方，另为开雕，而仍用其
名者，不敢忘其所自也。且亦遂余凛遵庭训，与人为善之素志也。故序数言于简端，以告当
世之阅是编者。
乾隆十有七年岁次壬中秋月
新安俞焕晓园氏书
我自幼接受父亲的教诲，无时无刻不在深夜清晨以“与人为善”这四个字来冰清玉洁地自我警惕。然而，我曾担心自己见识浅薄、见闻寡少，不足以承担广泛救济他人的抱负。医学这一道术，年少时便喜好治病救人，每次经过吴越之地，总是去拜访高明的医生和奇异的人士，向他们请教并深入探究医理。因此，曾经把这些道理宣之于口，记录于书本，采集于药方，选择于药材，庆幸得以保全自身完好无病，直到今年五十岁，精神气力比从前百倍强盛。从前的经历，大概已经很多了。但我曾对人说：生下来如果没有对别人有所救助，君子会称之为虚度一生。如果仅仅独自调理养生，却秘藏不告诉他人，那么黄帝岐伯的医术，凭什么流传至今？而卢公扁鹊为什么会有不能给自己治病的说法呢？所以我曾和大兄钱尔介、二兄钱彦方，精心挑选药材原料，秘密制作丸剂和散剂，如寸金丹、催生丸以及太乙灵膏，普遍施舍广泛赠送，丝毫不收取费用，这确实是远近都知道的事情。然而仍然认为传授药物不如传授方剂，因为传授药物只有我们一家能辨别真伪，而传授方剂则人人都能辨别。于是搜集旧有的传闻，拾取新编的内容，花费了很多心思进行采择，然后交付刻印，打算将这些内容散布到海内外，使得偏远乡村的家庭，都能一目了然地思考如何预防和治疗疾病，以不辜负我的心意。其中未曾经历过验证的，一概不收录。书既已编成，仍题名为《丹方类编》。原来吴门钱青抡先生旧有此书，沈子怀玉曾重新刻印，徐士与慕琛、吴尚采诸位先生都为此写过序言。我征求原本不可得，请朋友抄录了一通。如今追随多方刻印，另外重新开雕，而仍然使用其名称的原因，是不敢忘记它的来源。这也顺遂了我严格遵守父亲教诲、与人为善的平素志向。所以在书页前端写下这几句话，以此告知当今阅读此书的读者。
乾隆十七年岁次壬申中秋月
新安俞焕晓园氏书写
I received my father's teachings since childhood, and at no time did I fail to vigilantly uphold the four characters "doing good to others" (yǔ rén wéi shàn) in the depths of night and early morning. However, I often feared that my shallow views and limited knowledge were insufficient to fulfill my aspiration for broad humanitarian relief. The Way of medicine is such that from a young age, I took delight in treating illnesses; whenever I traveled through the regions of Wu and Yue, I invariably sought out eminent physicians and extraordinary scholars to discuss and thoroughly investigate medical principles. Thus, I once expounded these ideas orally, recorded them in books, collected prescriptions, and selected medicinal materials. Fortunately, my body remained intact and free from illness, and now at the age of fifty, my spirit and physical strength are ten times greater than before. My past experiences were indeed numerous. Yet I have often told people: If one is born without being able to benefit others, gentlemen consider it a wasted life. If one merely engages in self-regulation and preservation but keeps [medical knowledge] secret and does not share it with others, then how would the techniques of Huangdi (Yellow Emperor) and Qibo be transmitted to this day? And why did Lu Gong Bianque hold the view that he could not treat himself? Therefore, together with my eldest brother Erjie and my second brother Yanfang, I carefully selected medicinal materials and secretly prepared pills and powders, such as Cundan Jin (Cun Gold Pill), Cuisheng Wan (Labor-Inducing Pill), and Taiyi Linggao (Taiyi Spirit Ointment). These were widely distributed and given away freely, without accepting any payment. This is well known to people near and far. Nevertheless, I still believe that transmitting prescriptions is superior to transmitting raw herbs, because while only our family can identify the former, anyone can understand the latter. Consequently, I gathered old records and collected new compilations, spending considerable effort on selection and verification, before entrusting them to the printers. My intention was to disseminate them throughout the land, so that families in remote villages could clearly understand how to prevent and treat diseases, thereby fulfilling my original intent. Any content that had not been personally verified was excluded. Upon completion, I retained the title *Danfang Leibian* (Classified Compilation of Alchemical Prescriptions). Originally, Mr. Qian Qinglun of Wumen possessed a book of this name, which Shen Zihui had previously reprinted, with prefaces by Xu Shi Yu Muchen, Wu Shangcai, and other gentlemen. As I could not obtain the original text, I asked a friend to make a handwritten copy. Now, following various printed editions, I commissioned a new carving, yet retained the original name to avoid forgetting its source. This also fulfills my long-standing vow to strictly adhere to my father's teachings and do good to others. Hence, I write these few words at the beginning of the volume to inform contemporary readers of this compilation.
Written by Yu Huan (Xiaoyuan) of Xin'an, in the Mid-Autumn Month of Ren-Shen Year, 17th Year of Qianlong.