一因安逸，盖妇人怀胎，血以养之，气以护之，宜常时行动，令气血周流，胞胎活
动。如久坐久卧，以致气不营运，血不流顺，胎亦沉滞不活动，故令难产。常见田野
劳苦之妇，忽然途中腹痛，立便生产可知。
二因奉养，盖胎之肥瘦，气通于母，母之所嗜，胎之所养，如恣食浓味，不知减
节，故致胎肥而难产。常见糟糠之妇，容易生产可知。
三因淫欲，盖古者妇人怀孕即居侧室，不共夫寝，以淫欲最所当禁，盖胎系胞中，
全赖气血养育，静则神藏，若情欲一动，气血随耗，火扰于中，血气沸腾，三月以前犯
之，一则易动胎、小产，三月以后犯之，一则胞衣太浓而难产，一则胎元漏泄，子多肥
白而不寿，疮毒痘毒，疾厄难医。且人与物均禀气以生，然人之生子，不能胎胎顺，个
个存，而马牛犬豕，胎胎俱易，个个无损，何也？马牛犬豕，一受胎后，则牝牡绝不与
交，而人受妊，不能禁绝，矧有纵而无度者乎。
四因忧疑，今人求子之心虽切，保胎之计甚疏，或问卜祷神，或闻适有产变者，常
怀忧惧，心悬气怯，产亦艰难。
五因软怯，如少妇初产者，神气怯弱，子户未舒，更腰曲不伸，展转倾侧，儿不得
出。又中年妇人，生育既多，气血虚少，生亦艰难。
六因仓皇，有等愚蠢稳婆，不审正产弄产，但见腹痛，遽令努力，产妇无主，只得
听从，以致横生倒生，子母有伤，皆因仓皇之失。
七因虚乏，娠妇当产时，儿未欲出，用力太早，及儿欲出，母力已乏，令儿停住，
因而产户干涩，产亦艰难，此可以补血催生汤用之，如保产万全汤最妙。
一、因安逸所致。妇女怀孕后，血液用来滋养胎儿，气用来护卫胎儿，应当经常活动，使气血循环通畅，胞胎活跃。如果久坐久卧，导致气机运行不畅，血液流动不顺，胎儿也会沉滞而不活跃，从而导致难产。常见田野间劳作的妇女，忽然在途中腹痛，立刻就能生产，由此可知。
二、因过度供养（饮食不当）所致。胎儿的肥瘦，与母亲的气血相通，母亲所喜好的食物，就是胎儿所摄取的营养。如果放纵食欲，食用浓烈厚味的食物，不知节制，就会导致胎儿过肥而难产。常见吃粗茶淡饭的妇女，容易生产，由此可知。
三、因淫欲所致。古代妇女怀孕后即居住在侧室，不与丈夫同寝，因为淫欲是最应当禁止的。胎儿系于胞宫之中，完全依赖气血来养育。静养则神志内守，如果情欲一动，气血随之耗损，火热扰动于体内，血气沸腾。如果在怀孕三个月以前犯禁，一则容易导致胎动不安、小产；如果在怀孕三个月以后犯禁，一则会导致胞衣太厚而难产，二则会导致胎元漏泄，孩子多肥胖白皙但不长寿，易患疮毒痘毒等疾病，难以医治。况且人与动物都禀受气而生，然而人的生育，不能每胎都顺利，个个存活，而马牛狗猪等动物，每胎都容易生产，个个无损，为什么呢？马牛狗猪等在受孕之后，雌雄绝不交配，而人怀孕后，不能禁绝性欲，何况还有放纵无度的人呢。
四、因忧疑所致。现代人求子之心虽然迫切，但保胎的计划却很疏略。有的问卜祈祷神灵，有的听说别人生产时发生变故，常常心怀忧虑恐惧，心神悬吊，气怯无力，导致生产艰难。
五、因软弱怯懦所致。如年轻妇女初次生产，神气怯弱，子户（子宫口）未舒展，加上弯腰曲背不能伸直，辗转倾侧，胎儿不得出。又有中年妇女，生育次数过多，气血虚少，生产也艰难。
六、因仓皇失措所致。有些愚蠢的稳婆（接生婆），不分辨是正产还是弄产（异常分娩），只要见到腹痛，就急忙让产妇用力，产妇心中无主，只得听从，从而导致横生倒生，母子受伤，这都是因为仓皇失措造成的失误。
七、因虚乏所致。孕妇临产时，胎儿尚未想出来，过早用力，等到胎儿想出来时，母亲的力气已经耗尽，导致胎儿停滞，因而产道干涩，生产艰难。这种情况可以使用补血催生汤，如保产万全汤最为巧妙。
1. Due to excessive comfort and inactivity: After pregnancy, blood nourishes the fetus, and Qi protects it. It is advisable to engage in regular movement to ensure the free circulation of Qi and Blood, keeping the Bao Tai (uterus/fetus) active. Prolonged sitting or lying down may cause stagnation of Qi movement and sluggishness of Blood flow, leading to a stagnant and inactive fetus, thus resulting in difficult labor. This can be inferred from the observation that women engaged in field labor often experience sudden abdominal pain during their journey and deliver immediately.
2. Due to excessive nourishment (improper diet): The fatness or thinness of the fetus is connected to the mother's Qi and Blood; what the mother craves and consumes becomes the nourishment for the fetus. Indulging in rich and heavy flavors without moderation leads to an overly large fetus, causing difficult labor. This can be inferred from the ease with which women accustomed to coarse food give birth.
3. Due to sexual desire: In ancient times, pregnant women would reside in separate quarters and not share a bed with their husbands, as sexual desire was strictly prohibited. The fetus resides in the Bao Zhong (uterus) and relies entirely on Qi and Blood for nourishment. Stillness allows the Shen (Spirit) to remain contained. If sexual desire arises, Qi and Blood are consumed, fire disturbs the interior, and Qi and Blood boil. If this occurs within the first three months of pregnancy, it may easily cause fetal movement, miscarriage, or premature delivery. If it occurs after three months, it may result in a thickened placental membrane leading to difficult labor, or leakage of the Yuan Qi (Original Qi), resulting in children who are often fat and fair-skinned but short-lived, prone to sores, toxins, and smallpox-like diseases that are difficult to treat. Furthermore, although humans and animals both derive life from Qi, human births are not always smooth or every child survives, whereas horses, cattle, dogs, and pigs give birth easily and without loss. Why? Because after conception, male and female animals do not mate, whereas humans cannot abstain from intercourse after conception, let alone those who indulge without restraint.
4. Due to worry and doubt: Although people today have an urgent desire for children, their plans for protecting the fetus are often negligent. Some consult fortune-tellers or pray to deities; others hear of complications in other births and constantly harbor fear and anxiety. This causes the heart to be unsettled and Qi to become weak, making labor difficult.
5. Due to weakness and timidity: For young women giving birth for the first time, the Shen Qi (Spirit and Qi) may be timid and weak, and the Zi Hu (cervix/uterine opening) may not yet be relaxed. Coupled with bending the waist and inability to straighten, rolling and turning restlessly, the fetus cannot emerge. Similarly, middle-aged women who have given birth many times may suffer from deficiency of Qi and Blood, also resulting in difficult labor.
6. Due to panic and haste: Some incompetent midwives fail to distinguish between normal labor (Zheng Chan) and abnormal labor (Nong Chan). Upon seeing abdominal pain, they hastily instruct the parturient woman to exert effort. Lacking inner composure, the woman complies, leading to malpresentations such as transverse or breech positions, injuring both mother and child. These injuries are all due to the error of panic and haste.
7. Due to deficiency and exhaustion: During labor, if the fetus has not yet descended, pushing too early will exhaust the mother's strength before the fetus is ready to emerge. When the fetus finally attempts to descend, the mother lacks strength, causing the fetus to stall. This results in dryness and astringency of the birth canal, making labor difficult. In such cases, Bu Xue Cui Sheng Tang (Blood-Nourishing Labor-Inducing Decoction) can be used, and Bao Chan Wan Quan Tang (Decoction for Complete Safety in Childbirth) is considered most effective.