Generally speaking, there is no clear rule on whether to sleep on a soft bed or a hard bed, both hard and soft beds have their own advantages and disadvantages and need to be decided according to the mother’s personal preferences and physical condition, it is recommended to sleep on a soft and hard bed. The hard bed can help the mother to adjust the sleeping posture, so that the cervical spine and lumbar muscles are relaxed, which can reduce the chance of pregnant women bending back to a certain extent, but when sleeping on a hard bed can not adapt well to the requirements of the human physiological curvature, the point of force of the mother will be narrowed, easy to make the waist in a state of suspension, long-term may lead to lumbar strain or soreness of the maternal performance of the month. The texture of the soft bed is more comfortable and soft, so many women will choose soft beds during the menstruation period, but soft beds are easy to depression, lack of adequate support, so that the maternal body sinks, increasing the load on the lumbosacral area, in addition to sleeping on a soft bed when the internal organs of the chest cavity will be easily compressed, affecting maternal breathing. Because the maternal body is weak during the menstrual period, all aspects of function has not fully recovered, so it is more recommended to choose a soft and hard bed, soft and hard bed standards to adapt to the physiological curve of the human body, the body and bed surface can be basically fit when lying down.