WAS syndrome usually develops in childhood, with 72.3% of newborns and most children younger than 6 months of age. WAS syndrome, also known as eczematous thrombocytopenia with immunodeficiency syndrome, is a genetic disorder with an extremely low incidence of about 1 in 100,000 and cannot be prevented. Patients can develop symptoms of thrombocytopenia and immunodeficiency at the onset of the disease, which can easily lead to bleeding and infection. WAS syndrome is difficult to treat, and bone marrow and cord blood transplantation are effective treatments. Therefore, if a child has WAS syndrome, parents are advised to take the child to the pediatric internal medicine department of a regular hospital in a timely manner to determine the treatment plan based on the child’s specific symptoms.