During menstruation, it is best for women not to eat crab. Women should pay attention to keeping warm and not to get cold during menstruation, because cold and chilled women will have certain effects on menstruation. Crab is a cold, cool food, so if you eat crab, it may affect your menstruation, for example, some women may experience a decrease in menstruation or even amenorrhea. There are also some women who usually do not have dysmenorrhea, which may lead to the occurrence of dysmenorrhea symptoms; if the patient has dysmenorrhea, there is a possibility that the symptoms of dysmenorrhea patients may further aggravate, etc. Therefore, it is not recommended for women to eat crabs during their menstrual period. Women should prohibit the consumption of spicy and stimulating food during menstruation, it is better to eat food of warm nature, and at the same time pay attention to the cleanliness of the vulva and prohibit sexual intercourse, etc.