This article is devoted to modern innovative diagnostics, immunological tests for community-acquired pneumonia in young children. The main points for improving the diagnosis and differential diagnosis of pneumonia in children is the timely detection of a sick child with complicated course of the disease. According to the authors of the article, the content of cytokines IL 1 and IL4, interferons in the blood serum of sick children with community-acquired pneumonia depends on the period of the disease and the severity of the pathological process.