儿生三日，以桑、槐、榆、桃、柳、各取嫩枝三寸长者，二三十节煎汤，看冷
热，入猪胆汁二三枚，浴之。浴汤用猪胆、益母草，不生疮疥。用金银、虎头骨、
麝、丹砂，辟恶气、客忤、惊痫。用桃、梅、李、楮根叶，解体热温壮之病，须浴
时煮。汤须不冷不热，于无风密室浴之，勿令久。浴讫，以粉摩之，或以光粉、
蚌粉，扑身辟邪，吉。《纪用经》浴法，寅、卯、酉日吉，壬午、丁未、癸巳
凶，不能上三日，勿犯下三日。（三日、五日、七日浴。）小儿洗浴，不可先断脐带，候洗了
方断，不致水湿伤脐，可免脐风、脐疮、等证，用清油调发灰敷脐。洗儿，不可用
水打湿脐带。
《千金》云∶脐不得以刀割，隔单衣咬断，以暖气呵七遍，即缠结，所留带致儿
足趺上断讫，连脐带中多有虫，急剔拨去，不尔，入脐成疾。脐当长六寸，长则伤
肌，短则伤脏，不以时断及 汁不尽，暖气渐微，即生寒令儿脐风。《宝鉴》论∶
断脐若用剪刀，先于怀中令暖。又，水入脐，多天钓，痛苦啼叫，面青黑。脐伤动，
令久不干。伤外风，即口噤不可救。
《圣惠》云∶儿生一宿，抱近明无风处，看脐上有赤脉直上者，即于脉尽头灸三
壮，赤散，无患矣。
《千金》论∶治白练令柔软，方四寸，新绵浓半寸，与帛等合之裹脐，调其缓急，
急则吐 ，二十日乃解，若十许日怒啼，必衣中有刺，或脐燥刺腹，当更裹脐，冬
时须闭户下帐，然火令温暖，换衣亦然，仍以温粉、粉之。
婴儿出生三天后，用桑树、槐树、榆树、桃树、柳树各取三寸长的嫩枝，共二三十节煎煮成汤。待水温适宜（不冷不热）时，加入二三枚猪胆汁，给婴儿洗浴。此浴汤使用猪胆和益母草，可预防疮疥生成。若加入金银、虎头骨、麝香、朱砂，可辟除恶气、客忤（外邪侵袭）、惊痫。若加入桃、梅、李、楮树的根叶，需在水浴时一同煮制，可解除身体发热温壮之病。水温须保持不冷不热，在无风的密室中进行洗浴，时间不宜过长。洗浴完毕后，用爽身粉按摩身体，或使用光粉、蚌粉扑身以辟邪，为吉利之法。《纪用经》记载的洗浴吉日宜选在寅日、卯日、酉日；壬午日、丁未日、癸巳日为凶日，不可在这三日洗浴。（通常选择在出生后第三日、第五日、第七日洗浴。）给小儿洗浴时，不可先剪断脐带，应等洗完澡后再剪断，以免水湿侵入脐部受伤，从而避免发生脐风、脐疮等证候。可用清油调和发灰敷于脐部。洗儿过程中，不可用水打湿脐带。
《千金方》说：脐带不得用刀切割，应隔着单层衣服咬断，并用暖气呵气七遍，然后缠绕结扎。留下的脐带部分应在婴儿足背上方处剪断。否则，脐带中常含有虫子，若不立即剔除清除，虫子进入脐部会导致疾病。脐带的长度应当保留六寸，留得太长会损伤肌肉，太短则损伤内脏。如果不及时剪断以及脐汁排不尽，阳气逐渐微弱，就会生寒导致婴儿患脐风。《宝鉴》论述：剪断脐带如果用剪刀，先在怀中使其温暖。另外，如果水进入脐部，多引发天钓（一种新生儿痉挛性疾病），痛苦啼叫，面色青黑。脐部受伤动血，会导致久不干涸。若伤及外风，就会导致口噤（牙关紧闭），无法救治。
《圣惠方》说：婴儿出生一夜后，抱到明亮无风的地方，观察脐上是否有赤色血脉直向上延伸，如果有，就在血脉尽头施灸三壮，赤色消散，就没有祸患了。
《千金方》论述：治疗时用白练（白色丝织品）使其柔软，方形四寸，新棉厚半寸，与帛布同等厚度合在一起包裹脐部，调节松紧度。如果包扎过急，婴儿会呕吐，二十天后才解开；如果十几天内愤怒啼哭，必定是衣服中有刺，或者是脐部干燥刺痛腹部，应当重新包裹脐部。冬季必须关闭门窗放下帐子，生火使室内温暖，更换衣物也是如此，仍需用温粉涂抹身体。
Three days after birth, take tender branches three inches long from mulberry (Morus alba), locust tree (Robinia pseudoacacia), elm (Ulmus pumila), peach (Prunus persica), and willow (Salix babylonica) trees. Use twenty to thirty segments to decoct in water. When the temperature is suitable (neither cold nor hot), add two or three pig gallbladders (Sus scrofa domesticus vesica biliaris) and bathe the infant. Using pig gallbladder and Motherwort Herb (Leonurus japonicus) in the bathwater prevents sores and scabies. Adding gold, silver, tiger head bone, musk (Moschus moschiferus), and cinnabar (Cinnabaris) wards off evil qi, external pathogenic influences (Ke Wu), and convulsions. Adding roots and leaves of peach, plum, apricot, and paper mulberry (Broussonetia papyrifera), which must be boiled during bathing, resolves febrile conditions with high body heat. The water temperature should be neither cold nor hot; bathe in a windless, closed room, and do not prolong the duration. After bathing, massage the body with powder, or apply light powder or clam shell powder (Concha Meretricis et Cyclinae) to the body to ward off evil spirits, which is auspicious. The *Jiyong Jing* states that the auspicious days for bathing are Yin, Mao, and You days; Renwu, Dingwei, and Guisi days are inauspicious and should not be used for bathing. (Bathing is typically performed on the third, fifth, and seventh days after birth.) When bathing infants, do not cut the umbilical cord first; wait until after bathing to cut it, preventing water and dampness from injuring the umbilicus, thereby avoiding conditions such as neonatal tetanus (Qi Feng) and umbilical sores (Qi Chuang). Apply clear oil mixed with hair ash to the umbilicus. During bathing, ensure the umbilical cord is not wetted by water.
The *Qianjin Fang* states: The umbilical cord must not be cut with a knife. Instead, bite through it while wearing a single layer of clothing, breathe warm air into it seven times, and then tie it securely. The remaining cord should be severed above the infant's instep. Otherwise, insects often reside within the umbilical cord; if not promptly removed, they may enter the umbilicus and cause disease. The length of the retained umbilical cord should be six cun. If too long, it damages the muscles; if too short, it damages the internal organs. Failure to sever it in time or incomplete drainage of umbilical fluid leads to gradual weakening of warm yang, causing coldness and resulting in neonatal tetanus (Qi Feng). The *Baojian* discusses: If scissors are used to sever the cord, keep them warm in one's bosom beforehand. Furthermore, if water enters the umbilicus, it often induces Tian Diao (a type of neonatal spasm), characterized by painful crying and cyanotic-black complexion. Injury to the umbilicus causes prolonged non-healing. Exposure to external wind leads to trismus (lockjaw), which is incurable.
The *Shenghui Fang* states: One night after birth, hold the infant near a bright, windless place. Observe if there are red blood vessels extending straight upward from the umbilicus. If present, apply moxibustion (three moxa cones) at the end of the vessel. Once the redness dissipates, no harm will occur.
The *Qianjin Fang* discusses: For treatment, use white silk fabric (Bai Lian) made soft, cut into a four-cun square. Place half an inch of thick new cotton against it, matching the thickness of the silk, to wrap the umbilicus. Adjust the tightness appropriately. If wrapped too tightly, the infant may vomit; it should be removed after twenty days. If the infant cries angrily for ten-plus days, there may be thorns in the clothing, or dryness/stinging of the umbilicus irritating the abdomen; in such cases, re-wrap the umbilicus. In winter, close doors and windows, lower curtains, and use fire to keep the room warm. Changing clothes should follow the same procedure. Still, apply warm powder to the body.