左乳先有核者为男。右乳先有核者为女。
又法。令娠妇面南行。于背后呼之。左回来者生男。右回来者生女。
血漏胞干者杀胎。亦损妊母。
心肠急痛。面目青色。冷汗自出。气欲绝者死。
血下不止。胎冲上。四肢冷闷者死。
举重顿仆。致胎死腹中未出。而血不止。冲心闷痛者死。
寒热频作。舌下脉青而黑。舌卷上冷。子母俱死。
唇口俱青。痰沫呕出。子母皆死。
面赤舌青。母活子死。
面舌俱青。痰沫频出。子活母死。
面青舌赤。口中沫出。母死子活。
凡小儿五岁以下。三岁以上。只看形。五岁以上。渐可诊脉。呼吸八至是常脉也。九至者病。十
至者困。（许氏以大指按三部。十至为发热。五至为内胀。）
小儿脉浮而数。主乳痫风热之病。
小儿脉浮而数。主五脏壅（因乳热或着绵衣过多如此）
小儿脉虚涩。主惊风。（又浮则主风。促急主虚惊。）
小儿脉紧。主风痫。
小儿脉紧而弦。主腹痛不安。
小儿脉弦急。主气缠绕不和。
小儿脉牢而实。主大肠秘。
小儿脉沉而数。主骨中寒。（此数为虚。虚则髓少。故骨中寒。）
小儿脉沉而细。主冷。
小儿脉大小不等。乍大乍小。皆有祸祟。
小儿脉小或缓或沉。皆主食不消化。
小儿变蒸之时。身热脉乱。汗出。不欲食乳。食即吐。切不可医。必自瘥。（其候身热神
昏。或吐乳泻黄沫。多啼无喜悦。唇上生白珠子是也。每三十二日必一变。六十四日再变兼蒸。或
二十八日及三十日必变者。亦无定期。至二五日方歇。歇后精神必有异于前也。）
另一种方法：让孕妇面向南方行走，从背后呼唤她。如果她向左回头回应，则生男孩；如果向右回头回应，则生女孩。
若阴道出血不止且胞宫干枯，会导致胎儿死亡，同时也会损伤孕妇的生命。
若心腹部急剧疼痛，面目呈现青色，冷汗自行流出，气息微弱近乎断绝的，预后不良，将会死亡。
若阴道下血不止，胎气上冲，四肢冰冷昏闷的，预后不良，将会死亡。
若因举重或跌倒导致胎儿死于腹中未能排出，而阴道出血仍不止，且血液上冲心脏引起胸闷剧痛的，预后不良，将会死亡。
若寒热症状频繁发作，舌下脉络呈青黑色，舌头卷缩且发冷，母子均会死亡。
若嘴唇和口唇俱青，吐出痰涎泡沫，母子均会死亡。
若面色红润而舌色青黑，母亲存活而胎儿死亡。
若面色和舌色俱青，频繁吐出痰涎泡沫，胎儿存活而母亲死亡。
若面色青黑而舌色红润，口中流出涎沫，母亲死亡而胎儿存活。
凡是五岁以下、三岁以上的小儿，主要观察其形体表现；五岁以上的小儿，逐渐可以诊察脉象。呼吸八次为一息（一呼一吸为一息，此处指脉搏跳动次数与呼吸比例，通常指一息八至为正常），这是正常的脉象。九至的为患病。十至的病情危重。（许氏认为用大拇指按诊寸关尺三部，十至为发热，五至为内胀。）
小儿脉象浮而数，主乳痫风热之病。
小儿脉象浮而数，主五脏壅滞（因乳汁过热或穿着棉衣过多所致）。
小儿脉象虚涩，主惊风。（又若脉浮则主风邪，脉促急则主虚惊。）
小儿脉象紧，主风痫。
小儿脉象紧而弦，主腹痛不安。
小儿脉象弦急，主气机缠绕不和。
小儿脉象牢而实，主大肠便秘。
小儿脉象沉而数，主骨中寒。（此处的“数”脉属于虚数，虚则髓海不足，故表现为骨中寒。）
小儿脉象沉而细，主寒证。
小儿脉象大小不等，忽大忽小，都预示着有灾祸或邪祟作怪。
小儿脉象小，或缓，或沉，都主饮食不消化。
小儿在变蒸时期，身体发热，脉象紊乱，出汗，不想吃奶，吃了就吐，切不可进行治疗，必定会自愈。（其征候为身体发热、神志昏沉，或吐乳、泻黄沫，多啼哭而无喜悦之色，嘴唇上生出白色珠子样颗粒等。每三十二天必有一次变，六十四天再变兼蒸。也有二十八日及三十日必变的，也没有固定日期，直到二十五个月才停止。变蒸停止后，精神面貌必定会有异于从前。）
A nodule appearing first in the left breast indicates a male child. A nodule appearing first in the right breast indicates a female child.
Another method: Have the pregnant woman walk facing south, and call her from behind. If she turns back to the left, a male will be born; if she turns back to the right, a female will be born.
If there is continuous vaginal bleeding accompanied by a dry uterus (Baogong), the fetus will die, and the mother's life will also be endangered.
If there is acute pain in the heart and abdomen, cyanosis of the face and eyes, spontaneous cold sweat, and breath nearly failing, death will occur.
If there is continuous vaginal bleeding, fetal Qi rushing upward, and coldness and numbness in the four limbs, death will occur.
If heavy lifting or falling causes the fetus to die in the womb without being expelled, and vaginal bleeding continues with blood rushing to the heart causing chest tightness and severe pain, death will occur.
If chills and fever occur frequently, the veins under the tongue are blue-black, the tongue curls up and feels cold, both mother and child will die.
If the lips and mouth are cyanotic, and phlegm-foam is vomited out, both mother and child will die.
If the face is red and the tongue is cyanotic, the mother survives while the fetus dies.
If both the face and tongue are cyanotic, and phlegm-foam is frequently discharged, the fetus survives while the mother dies.
If the face is cyanotic and the tongue is red, with saliva flowing from the mouth, the mother dies while the fetus survives.
For children aged three to five years, diagnosis primarily relies on observing physical signs. For children over five years old, pulse diagnosis gradually becomes feasible. A normal pulse rate is eight beats per respiration cycle. Nine beats indicate illness. Ten beats indicate critical condition. (Xu believed that using the thumb to palpate the Cun, Guan, and Chi positions on all three positions, ten beats indicate fever, and five beats indicate internal distension.)
A floating and rapid pulse in children indicates diseases such as nursing epilepsy and wind-heat.
A floating and rapid pulse in children indicates stagnation of the Five Zang organs (caused by overheated milk or excessive cotton clothing).
A deficient and choppy pulse in children indicates convulsions due to fright. (Furthermore, a floating pulse indicates wind pathogen, and a hurried and urgent pulse indicates deficiency-induced fright.)
A tight pulse in children indicates wind epilepsy.
A tight and wiry pulse in children indicates abdominal pain and restlessness.
A wiry and urgent pulse in children indicates disordered Qi circulation.
A deep, firm, and excess pulse in children indicates constipation of the Large Intestine.
A deep and rapid pulse in children indicates cold in the bones. (This rapid pulse is due to deficiency; deficiency leads to insufficient marrow, hence cold in the bones.)
A deep and thin pulse in children indicates cold syndrome.
An irregular pulse in children, varying in size from large to small, suggests misfortune or evil influences.
A small, slow, or deep pulse in children indicates indigestion.
During the period of "Bian Zheng" (developmental changes) in infants, symptoms include body heat, chaotic pulse, sweating, refusal to nurse, and vomiting after feeding. Medical intervention should be avoided as it will self-heal. (Signs include body heat, confusion, vomiting milk, passing yellow foam, excessive crying without joy, and white bead-like formations on the upper lip. There is a change every 32 days, and a combined change at 64 days. Changes may also occur at 28 or 30 days without fixed regularity, ceasing around 25 months. After cessation, the infant's spirit and demeanor will differ from before.)