Pregnant women chest acne may be endocrine disorders, improper diet, folliculitis and other factors, it is recommended that pregnant women pay attention to personal hygiene, pay attention to the daily diet, if necessary, can be topical medication to relieve acne. 1. Endocrine disorders: pregnant women chest acne may be caused by endocrine disorders due to hormonal changes in pregnancy, it is recommended that pregnant women to relax, rational response, good personal hygiene, and develop a good routine. 2. Improper diet: pregnant women chest acne may be caused by improper diet, it is recommended that pregnant women eat less spicy and stimulating food, eat more fresh vegetables and fruits, drink more water. 3. Folliculitis: pregnant women chest acne may be caused by local folliculitis, it is recommended that pregnant women take a shower every day, wear loose cotton clothes, you can also apply erythromycin ointment and other drugs. The medication needs to be guided by the doctor. Pregnant women chest acne is more serious, you can go to the regular hospital in time.