Allergic purpura does not affect fertility, allergic purpura is a vasculitis of different causes, pathologically characterized by the deposition of immune complexes in the walls of blood vessels leading to changes in the permeability of the walls and leakage of red blood cells resulting in the disease. Allergic purpura does not affect fertility, for example, women need to take a wheelchair at each visit and go home with both lower extremities covered with bleeding spots, it is recommended to go home and lie down, and because of the effect of drugs on the fetus, pregnant women only take oral vitamin C to improve the permeability of the blood vessel wall, as well as oral anti-allergic calcium, after three months the patient’s skin bleeding spots healed, no need to take a wheelchair to visit, and reach full term pregnancy and give birth to a baby successfully.