How long or whether children’s purpura can be cured is related to the specific type and severity of the disease. In the case of thrombocytopenic purpura, it resolves in about 1 year; in the case of anaphylactic purpura, it resolves in about 2 months; and in the case of mechanical purpura, it usually requires no treatment. 1. Thrombocytopenic purpura: If the child does not have obvious bleeding tendency and other conditions, it can be left untreated after doctor’s evaluation, and most children can have a natural remission in about 1 year; however, about 20% of children may progress to chronic thrombocytopenic purpura, which is more difficult to treat and the treatment time will be prolonged. 2. Anaphylactic purpura: The symptoms of this disease mostly resolve naturally within 2 months, but about 30% of children will have a relapse. If it is simple purpura, it can be relieved by itself in about 1~2 weeks; if there is serious kidney damage such as renal failure or gastrointestinal hemorrhage, it can jeopardize children’s lives and is more difficult to treat. 3. Mechanical purpura: mostly associated with elevated pressure in small blood vessels, which can lead to the rupture of small blood vessels and bleeding to form purpura, which can generally subside on its own. Therefore, how long will it take for a child to have purpura to get better is based on the type and degree of the child’s purpura to decide, but also early diagnosis and early treatment.