太医院支改斋先生辨之最详，谓痘之所生，皆属心火，斯足破千古疑案。可见古方用黄
连甘草煎汤，抹儿口以解胎毒者，岂非泻心火之药也乎。惟今人嫌其黄连大苦大寒，多不敢
用，可即用金银花、甘草指许一节拍碎，用水二挑，煎一挑，以棉蘸裹令儿吮之，若吐出恶
物为佳。服一挑后不吐，即不须服。不问小儿虚实，皆可服之。
凡儿生下月内，每日必须洗口，或温汤、或苦茶，以青帛裹指头蘸搅儿口内，如齿龈边
有白点洗不去，即以指爪或银针挑破，取桑树汁滤清涂之，永无惊风嘬口之患。惟必须每日
一洗，留心看视，不可疏忽。
又，开口方∶生甘草一钱、丝瓜子一钱、水煎，先吃数挑，然后开口吃乳，可一身无疮
毒。
小儿口噤方∶用葱白一寸。破作四片，乳汁蒸，灌之即愈。
《保生要法》云∶小儿初生，若多睡，勿强与乳，自然长而少病。《颅囟经》云∶夏中
盛热时，乳母浴后勿与儿乳，免儿成胃毒、赤白痢。定息良久，熟揉乳良久，然后乳之可也。
《小儿精要》云∶夜间乳儿，须乳母起坐，抱儿乳之。儿睡忌乳，恐母鼻风吹儿囟门，
致成风疾。母有孕乳儿必患胎黄，母大醉乳儿必患惊热，母伤饱乳儿必成喘急，母大怒乳儿
必成癫狂，母新吐乳儿必患虚羸
《养子真诀》云∶
乳子须调护，看承莫纵弛。
乳多终损胃，食旧即伤脾。
衾浓非为益，衣单正所宜。
无风频见日，寒暑顺天时。
太医院的支改斋先生对此辨析得最为详尽，他认为痘疮（天花）的产生，都属于心火所致，这足以破除千古以来的疑案。由此可见，古方中使用黄连、甘草煎汤，涂抹婴儿口腔以解除胎毒的方法，难道不是泻除心火的药物吗？只是现代人嫌弃黄连过于苦寒，大多不敢使用，可以改用金银花、甘草约一指节长短拍碎，用水两挑（量词），煎至一挑，用棉絮蘸取包裹在手指上让婴儿吮吸，如果吐出恶物为佳。服用一挑后若不呕吐，就不必再服。无论小儿体质虚实，都可以服用。
凡是婴儿出生后的一个月内，每天必须清洗口腔，可用温水或苦茶，用青布包裹手指蘸取搅动婴儿口腔内部，如果在齿龈边缘有洗不掉的白点，就用指甲或银针挑破，取桑树汁过滤澄清后涂抹，永远不会有惊风、撮口（新生儿破伤风的一种症状）的祸患。但必须每天清洗一次，留心观察，不可疏忽大意。
另外，开口方：生甘草一钱、丝瓜子一钱，水煎，先喂几挑，然后开口吃奶，可以使全身没有疮毒。
小儿口噤方：用葱白一寸，剖成四片，用乳汁蒸热，灌服即可痊愈。
《保生要法》说：婴儿刚出生时，如果嗜睡，不要强行喂奶，自然会长大且少生病。《颅囟经》说：盛夏酷暑之时，乳母洗澡后不要立即给婴儿喂奶，以免婴儿患上胃毒、赤白痢疾。待气息平稳很久后，仔细揉搓乳房很久，然后再喂奶才可以。
《小儿精要》说：夜间喂奶，必须让乳母起身坐起，抱着婴儿喂奶。婴儿睡觉时忌讳喂奶，恐怕母亲鼻子呼出的风吹到婴儿的囟门，导致形成风疾。母亲怀孕时喂奶，婴儿必定患胎黄；母亲大醉时喂奶，婴儿必定患惊热；母亲饱食后喂奶，婴儿必定形成喘急；母亲大怒时喂奶，婴儿必定形成癫狂；母亲刚呕吐完喂奶，婴儿必定患虚羸（身体虚弱消瘦）。
《养子真诀》说：
哺乳子女需要调护，看护不要放纵松弛。
奶多终究损伤胃，积食旧乳即伤害脾。
被子厚重并非有益，衣服单薄反而适宜。
无风时频繁晒太阳，寒暑顺应天时变化。
Mr. Zhi Gaizhai of the Imperial Medical Bureau analyzed this in great detail, stating that the generation of smallpox (Tianhua) all belongs to Heart Fire (Xin Huo), which is sufficient to break through the doubts of thousands of years. Thus, it can be seen that ancient prescriptions using decoctions of Huanglian (Coptidis Rhizoma) and Gancao (Glycyrrhizae Radix et Rhizoma) applied to the infant's mouth to resolve fetal toxins are indeed medicines for purging Heart Fire. However, modern people dislike the extreme bitterness and coldness of Huanglian and mostly dare not use it. Instead, one can use Jinyinhua (Lonicerae Japonicae Flos) and Gancao (Glycyrrhizae Radix et Rhizoma), approximately the length of a finger joint, crushed, boiled with two units of water until reduced to one unit. Dip cotton into this liquid, wrap it around the finger, and let the infant suckle. It is auspicious if the infant vomits foul matter. If after consuming one unit there is no vomiting, further administration is unnecessary. This can be taken regardless of whether the child's constitution is deficient or excess.
For the first month after birth, an infant's mouth must be washed daily. Use warm water or bitter tea, wrap a finger with green silk, dip it, and stir inside the infant's mouth. If there are white spots on the gums that cannot be washed away, pierce them with fingernails or a silver needle, take mulberry tree juice, filter it clearly, and apply it. This will permanently prevent the risk of convulsions (Jing Feng) and lockjaw (Zuo Kou). However, it must be washed once daily, with careful observation, and without negligence.
Another prescription for opening the mouth: Sheng Gancao (Raw Glycyrrhizae Radix et Rhizoma) 1 qian, Sigua Zi (Trichosanthis Semen) 1 qian, decocted in water. Feed a few drops first, then open the mouth to breastfeed, which can prevent sores and toxins throughout the body.
Prescription for infant lockjaw (Kou Jin): Use 1 cun of Congbai (Allii Fistulosi Bulbus), split into four pieces, steam with Ru Zhi (Materis Lac), and administer orally for immediate recovery.
Baosheng Yaofa states: When an infant has just been born, if they sleep excessively, do not force-feed milk; naturally, they will grow up with fewer illnesses. Luxin Jing states: During the intense heat of mid-summer, after the nursing mother takes a bath, she should not nurse the infant immediately, to avoid causing stomach toxins or dysentery with red and white discharge in the infant. After breathing settles for a long time, massage the breasts thoroughly for a long while, and only then is it appropriate to nurse.
Xiao'er Jingyao states: For night nursing, the nursing mother must rise and sit up, holding the infant to nurse. Nursing while the infant sleeps is taboo, as fear arises that wind from the mother's nose blowing onto the infant's fontanelle may cause wind diseases. If a pregnant woman nurses, the infant will surely suffer from fetal jaundice (Tai Huang); if a drunk woman nurses, the infant will surely suffer from惊热 (convulsive fever); if a woman who has just eaten her fill nurses, the infant will surely develop wheezing urgency; if an angry woman nurses, the infant will surely develop mania; if a woman who has just vomited nurses, the infant will surely suffer from deficiency and emaciation.
Yangzi Zhenshuo states:
Nursing children requires care and protection; do not be lax in supervision.
Excessive milk ultimately damages the Stomach; retained old milk injures the Spleen.
Thick quilts are not beneficial; light clothing is actually suitable.
In the absence of wind, frequently expose to sunlight; follow the seasons regarding cold and heat.