古人不在朝廷之上，必居医卜之中，虽然医之为艺诚难矣，亦贵乎精也。所谓精者，当
先造于四者之妙而已。古人云，脉病证治是也。夫微妙在脉，不可不察，察之有理，乃知受
病之因，得病之因，乃识其证，既识其证，则可详其所治，四者不失，临病之际，可以疗寒
以冷，有余者与之，不足者取之，是谓实实虚虚，损不足而益有余。苟不明此，鲜有不致毙
者，良可叹哉！用和幼自八岁喜读书，年十二，受学于复真刘先生之门，先生名开，立之其
字也。独荷予进，面命心传，既十七，四方士夫，曾不以少年浅学，而邀问者踵至，今留心
三十余岁矣！偶因暇间，慨念世变有古今之殊，风土有燥湿之异，故人禀亦有浓薄之不齐，
概执古方，以疗今之病，往往枘凿之不相入者，辄因臆见，乃度时宜，采古人可用之方。裒
所学已试之效，疏其论治，犁为条类，名曰济生方，集既成，不敢私秘，竟锓诸木，用广其
传，不惟可以备卫生家缓急之需，抑以示平日师传济生之实意云。
时宝治癸丑上已庐山严用和序。
余夙嗜方书，蚤即师授以医道行世五十余年，比因暇日，论治凡八十，制方凡四百，总
为十
着续
不过
所以
时咸淳丁卯良月庐山严用和谨书。
夫肝者，足厥阴之经，位居东方，属乎甲乙木，开窍于目，候于左胁。其政变动，病发
惊骇
其经
食，
枯，
心下
筋急
或
治
古人如果不身居朝廷高位，就必定处于医、卜等技艺之中。虽然医学作为一门技艺确实艰难，但也贵在精通。所谓精通，应当首先达到“脉、病、证、治”这四者的精妙境界。古人所说的，指的就是这四个方面。脉象的微妙之处，不可不仔细考察；通过考察掌握其规律，才能知晓致病的原因；了解了致病原因，就能识别病症；既然识别了病症，就可以详细制定治疗方案。如果这四个方面没有失误，在面对疾病时，就可以用寒凉药治疗热证，有余者泻之，不足者补之。如果不明白这一点，反而去实证加实、虚证加虚，损害本已不足的正气而增加邪气，那么很少有不导致死亡的，实在令人叹息！
严用和自幼八岁起就喜爱读书，十二岁时拜复真刘先生门下求学，先生名开，字立之。先生唯独看重我，当面教导，心法相传。到我十七岁时，各地的士人并不因为我是少年且学识浅薄，邀请请教的人接踵而至。至今留心医术已有三十多年了！偶然在闲暇之余，感慨世道变迁有古今的不同，风土气候有燥湿的差异，人的先天禀赋也有厚薄的不同。如果一概拘泥于古方来治疗当今的疾病，往往会出现格格不入的情况。于是根据个人的见解，衡量时宜，采集古人可用的方剂。汇集自己所学且已经验证有效的方子，梳理其中的论治道理，分门别类整理成书，命名为《济生方》。书稿完成后，不敢私自珍藏，最终刻印出版，以广泛流传。这不仅是为了备养生之家在紧急时刻的需求，也是为了展示平日师承传授、济世救人的真实意图。
时为宝祐三年（癸丑年）上巳日，庐山严用和作序。
我向来酷爱医书，早年即受师授医道，行医于世五十多年。近日趁闲暇时日，论述治法共八十种，制定方剂共四百首，总共编为十卷。所以当时的人都称赞……（原文此处似有残缺或排版错误，“着续不过所以”语意不通，依文意推测为介绍书籍规模及流传情况）。时为咸淳三年（丁卯年）良月，庐山严用和谨书。
肝脏，是足厥阴经所属，位居东方，五行属甲乙木，开窍于目，反映在左胁部。其政令变动，发病时容易出现惊骇……（原文此处中断，后续内容缺失）。
In ancient times, if one did not hold a high position in the court, one would necessarily engage in arts such as medicine or divination. Although medicine as an art is indeed difficult, it values proficiency above all. Proficiency means first attaining the subtlety of the "Four Essentials": Pulse (Mài), Disease (Bìng), Syndrome (Zhèng), and Treatment (Zhì). As the ancients said, these four aspects are crucial. The subtleties lie in the pulse, which must not be neglected; by examining it with principle, one can know the cause of the disease; knowing the cause allows one to identify the syndrome; once the syndrome is identified, one can detail the treatment. If these four aspects are not lost, when facing illness, one can treat cold with cold (a likely textual error for treating heat with cold, or vice versa depending on context, but literally: "treat cold with cold"), drain what is excessive, and tonify what is deficient. This is called "reinforcing excess and depleting deficiency" (Shí Shí Xū Xū), damaging the insufficient and benefiting the excessive. If one does not understand this, few will avoid death; this is truly lamentable!
Yan Yonghe loved reading since the age of eight. At twelve, he studied under Master Liu Fuzhen (Mr. Kai, courtesy name Lizhi). The master uniquely valued me, teaching me face-to-face and transmitting the heart-mind method. By seventeen, scholars from all directions did not disdain my youth and shallow learning, and those seeking advice came in succession. I have now focused on medicine for over thirty years! Occasionally, during leisure time, sighing at the differences between ancient and modern worlds, the dryness and dampness of different regions, and the varying thickness or thinness of people's innate endowment, I realized that rigidly adhering to ancient prescriptions to treat contemporary diseases often results in incompatibility. Thus, relying on my own insights, considering current circumstances, I collected prescriptions usable by the ancients. I compiled those I had learned and tested for efficacy, organized their theories and treatments, categorized them into sections, and named the work *Jisheng Fang* (Prescriptions for Saving Lives). Upon completion, I dared not keep it secret, so I had it carved onto wood blocks for wide dissemination. This is not only to meet the urgent needs of those concerned with health preservation, but also to demonstrate the true intent of my daily teacher-student transmission and life-saving practice.
Preface by Yan Yonghe of Mount Lu, on the Shangsi Day of the Gui-Chou Year of Baoyou.
I have long cherished medical books and was taught the Way of Medicine early on, practicing for over fifty years. Recently, during leisure days, I discussed eighty methods of treatment and formulated four hundred prescriptions, totaling ten volumes... [Text fragment] ...so the contemporaries praised... Written respectfully by Yan Yonghe of Mount Lu in the good month of the Ding-Mao Year of Xianchun.
The Liver belongs to the Foot Jueyin Meridian, is located in the East, corresponds to the Wood element (Jia-Yi), opens into the eyes, and manifests in the left hypochondrium. Its political movement causes diseases manifesting as fright and terror... [Text ends abruptly].