The occurrence of baldness during pregnancy cannot be ruled out due to immune factors, genetic factors, and triggering factors. 1. Immune factors: the destruction of the immune immunity mechanism of the hair follicle is the key to the occurrence of baldness, and it is considered to be related to autoimmune factors, and is often complicated with hyperthyroidism, dry syndrome and other autoimmune-related diseases. 2. Genetic factors: the occurrence of baldness may have a genetic basis, such as identical twins at the same time the probability of baldness is higher, and parents who have had baldness, their children’s chances of baldness are higher than normal. 3. Triggering factors: baldness during pregnancy may be related to nervousness, anxiety, depression, insomnia and neurasthenia and other neuropsychiatric factors. For baldness during pregnancy, you should remove the triggering factors as soon as possible, consult a doctor in time, and follow the doctor’s instructions for treatment.