It is best not to eat crabs. Crabs are cold in nature and can easily cause dysmenorrhea for women during menstruation, especially those with weak constitutions or those with cold constitutions. During the menstrual period, it is generally recommended to eat some relatively mild things or some blood-enhancing substances. In addition, you need to pay more attention to other aspects. Maintaining good living habits during the menstrual period can try to avoid common gynecological diseases such as irregular menstruation and dysmenorrhea.

Precautions during menstruation:

1. Not suitable for sexual life: During menstruation, the lining of the uterine cavity peels off, forming a traumatic surface on the surface. If sexual life occurs, bacteria can easily be introduced , causing it to travel retrograde and enter the uterine cavity, causing infection in the uterus.

2. It is not suitable to eat food that is too salty: Food that is too salty will increase the storage of salt and water in the body. Before menstruation, symptoms such as headache, agitation, and anger are likely to occur.

3. It is not suitable to drink strong tea and coffee: These drinks contain high caffeine content, which can easily stimulate nerves and cardiovascular systems, leading to uncomfortable symptoms such as menstrual pain, prolonged menstruation, and excessive menstrual bleeding.

4. It is not advisable to eat raw and cold vegetables and fruits and cold drinks: Raw and cold foods will reduce the speed of blood circulation, which will affect the contraction of the uterus and the discharge of menstrual blood, causing unfavorable discharge of menstrual blood and causing menstrual pain.

5. It is not advisable to eat seafood: Most seafood is cold, known as "yang in yin". After cold food enters the esophagus, the blood vessels of the gastrointestinal tract contract when exposed to cold, weakening the digestive ability of the gastrointestinal tract. This leads to the occurrence of various phenomena such as diarrhea.

6. It is not advisable to take sitz baths or tub baths: the cervix is ??slightly open during menstruation, and sitz baths and tub baths can easily cause sewage to enter the uterine cavity and cause inflammation.