Pressure purpura is the symptom of a series of hemorrhagic spots and purpura on the skin due to increased pressure in the capillaries caused by various reasons, resulting in capillary rupture. Clinically, pressure purpura is common in infants and young children, especially in infants and young children who cry loudly, hold their breath or have a hard bowel movement and other situations of increased intra-abdominal pressure, due to the poor blood reflux, resulting in increased local pressure in the capillaries, and cause the rupture of capillaries. It is common to see small bleeding spots or purpura on the face of children, which is called pressure purpura. Therefore, to confirm the diagnosis of pressure purpura, the site should be clear, commonly found in infants and young children’s head, face and neck, and young children often have a history of obvious crying, history of straining to defecate, or holding their breath, resulting in localized pressure increase. If there is such a history, and there is bleeding in the head, face and other areas, the diagnosis of pressure purpura can be confirmed.