九虫者，一曰伏虫，长四分；二曰蛔虫，长一尺；三曰白虫，长一寸；四曰肉虫，状如
烂杏；五曰肺虫，状如蚕；六曰胃虫，状如虾蟆；七曰弱虫，状如瓜瓣；八曰赤虫，状如生
肉；九曰蛲虫，至细微，形如菜虫。
伏虫，群虫之主也。蛔虫，贯心则杀人。白虫相生，子孙转多，其母转大，长至四五尺
，亦能杀人。肉虫，令人烦满。肺虫，令人咳嗽。胃虫，令人呕吐，胃逆喜哕。弱虫，又名
膈虫，令人多唾。赤虫，令人肠鸣。蛲虫，居胴肠，多则为痔，极则为癞，因人疮处以生诸
痈、疽、癣、 、 、疥、龋虫，无所不为。
人亦不必尽有，有亦不必尽多，或偏有，或偏无者。此诸虫根据肠胃之间，若腑脏气实，
则不为害，若虚则能侵蚀，随其虫之动而能变成诸患也。
三虫者，长虫、赤虫、蛲虫也。为三虫，犹是九虫之数也。长虫，蛔虫也，长一尺，动
则吐清水，出则心痛，贯心则死。赤虫，状如生肉，动则肠鸣。蛲虫至细微，形如菜虫也，
居胴肠间，多则为痔，极则为癞，因人疮处，以生诸痈、疽、癣、 、 、疥、龋虫，
无所不为。
此既是九虫内之三者，而今别立名，当以其三种偏发动成病，故谓之三虫也。其汤熨针
石，别有正方，补养宣导，今附于后。
《养生方·导引法》云∶以两手着头相叉，长引气，即吐之。坐地，缓舒两脚，以两手
从外抱膝中，疾低头，入两膝间，两手交叉头上，十二通，愈三尸也。
又云∶叩齿二七过，辄咽气二七过，如此三百通乃止。为之二十日，邪气悉去；六十日
，小病愈；百日，大病除，三虫伏尸皆去，面体光泽也。
九种寄生虫，第一种叫伏虫，长度四分；第二种叫蛔虫，长度一尺；第三种叫白虫，长度一寸；第四种叫肉虫，形状像腐烂的杏子；第五种叫肺虫，形状像蚕；第六种叫胃虫，形状像蛤蟆；第七种叫弱虫，形状像瓜瓣；第八种叫赤虫，形状像生肉；第九种叫蛲虫，极其细微，形状像菜虫。
伏虫，是各种虫类的主宰。蛔虫，如果贯穿心脏就会致死。白虫繁殖后代，子孙越来越多，母虫变得更大，长达四五尺，也能致死。肉虫，使人感到烦闷胀满。肺虫，使人咳嗽。胃虫，使人呕吐，胃气上逆喜欢打呃逆。弱虫，又名膈虫，使人多唾液。赤虫，使人肠鸣。蛲虫，居住在胴肠（直肠），数量多则导致痔疮，极多则导致癞病，依附于疮疡处，从而产生各种痈、疽、癣、疖、瘰疬、疥疮、龋齿虫等，无所不为。
人身上不一定全有这些虫，即使有也不一定很多，有的偏多，有的偏少。这几种虫子都盘踞在肠胃之间，如果脏腑之气充实，就不会为害，如果虚弱就能侵蚀身体，随着虫子的活动而变成各种病患。
三种虫，指长虫、赤虫、蛲虫。所谓三虫，仍然包含在九虫的数量之中。长虫，就是蛔虫，长度一尺，活动时吐出清水，虫出则心痛，贯穿心脏就会死亡。赤虫，形状像生肉，活动时肠鸣。蛲虫极其细微，形状像菜虫，居住在胴肠之间，数量多则导致痔疮，极多则导致癞病，依附于疮疡处，从而产生各种痈、疽、癣、疖、瘰疬、疥疮、龋齿虫等，无所不为。
这三种既是九虫中的三种，现在单独设立名称，是因为这三种虫容易单独发动致病，所以称为三虫。治疗它们的汤药、熨法、针刺、砭石，另有专门的方剂，补养和导引方法，现在附在后面。
《养生方·导引法》说：用两手交叉放在头后，深深吸气，然后呼出。坐在地上，缓慢伸直双脚，用两手从外侧抱住膝盖中间，迅速低头，头进入两膝之间，两手在头上交叉，做十二次，可以治愈三尸虫。
又说：叩齿十四次，随即咽气十四次，像这样重复三百次才停止。坚持二十天，邪气全部去除；六十天，小病痊愈；一百天，大病消除，潜伏体内的三虫全部去除，面部和身体光泽润泽。
The nine types of parasites are: the first is called Fuchong (Hidden Worm), measuring four fen in length; the second is called Huichong (Roundworm), measuring one chi in length; the third is called Baichong (White Worm), measuring one cun in length; the fourth is called Roucheong (Flesh Worm), resembling a rotten apricot; the fifth is called Feichong (Lung Worm), resembling a silkworm; the sixth is called Weichong (Stomach Worm), resembling a toad; the seventh is called Ruochong (Weak Worm), resembling a melon seed; the eighth is called Chichong (Red Worm), resembling raw meat; and the ninth is called Nuochong (Pinworm), extremely minute, resembling a vegetable worm.
Fuchong (Hidden Worm) is the master of all worms. If Huichong (Roundworm) penetrates the heart, it causes death. Baichong (White Worm) reproduces, with offspring multiplying, causing the mother worm to grow larger, reaching four or five chi in length, which can also cause death. Roucheong (Flesh Worm) causes vexation and fullness. Feichong (Lung Worm) causes coughing. Weichong (Stomach Worm) causes vomiting and a tendency for stomach qi to rebel, resulting in hiccups. Ruochong (Weak Worm), also known as Gechong (Diaphragm Worm), causes excessive salivation. Chichong (Red Worm) causes borborygmus (intestinal rumbling). Nuochong (Pinworm) resides in the tongchang (rectum); when numerous, they cause hemorrhoids; at their extreme, they cause leprosy-like conditions; adhering to ulcerated areas, they generate various sores, carbuncles, tinea, boils, scrofula, scabies, and dental caries worms, doing everything possible.
Humans do not necessarily have all these worms, nor does having them imply abundance; some may have an excess of certain types while lacking others. These various worms reside between the intestines and stomach. If the qi of the fu and zang organs is substantial, they do no harm; if deficient, they can erode the body, transforming into various ailments according to the movement of the worms.
The three types of worms refer to Changchong (Long Worm), Chichong (Red Worm), and Nuochong (Pinworm). The term "three worms" still falls within the count of the nine worms. Changchong is Huichong (Roundworm), measuring one chi in length; when active, it causes the expulsion of clear fluid, and upon exiting, causes heart pain; if it penetrates the heart, it causes death. Chichong (Red Worm) resembles raw meat; when active, it causes borborygmus. Nuochong (Pinworm) is extremely minute, resembling a vegetable worm, residing between the tongchang (rectum); when numerous, they cause hemorrhoids; at their extreme, they cause leprosy-like conditions; adhering to ulcerated areas, they generate various sores, carbuncles, tinea, boils, scrofula, scabies, and dental caries worms, doing everything possible.
Since these three are part of the nine worms, but are now given separate names, it is because these three types tend to act independently to cause disease, hence they are called the "Three Worms." Decoctions, moxibustion/heat therapy, acupuncture, and stone therapy for treating them have separate specific formulas. Nourishing and guiding exercises are attached hereafter.
The *Yangsheng Fang* (Prescriptions for Nourishing Life) · *Daoyin Fa* (Guiding and Pulling Methods) states: Cross both hands behind the head, draw qi deeply, and then exhale. Sit on the ground, slowly extend both legs, embrace the middle of the knees with both hands from the outside, bend the head down quickly until it enters between the two knees, cross hands above the head, repeat twelve times, and this will cure the Three Corpses (Sanshi).
It further states: Clench teeth fourteen times, then swallow qi fourteen times; repeat this process three hundred times before stopping. Practicing this for twenty days eliminates all pathogenic qi; after sixty days, minor illnesses are cured; after one hundred days, major illnesses are removed, and the Three Corpses (Sanshi) lurking in the corpse are eliminated, leaving the face and body lustrous.