Xiyanping Injection Combined With Azithromycin VS Azithromycin for Children With pneumoniaProtozoal Pneumonia

Inclusion Criteria: 1. 5 to 14 years of age at the time of screening; 2. Children who meet the Western medicine clinical diagnosis standard of Mycoplasma pneumoniae and the mycoplasma pneumoniae IgM antibody titer ≥1 : 80, or Mycoplasma pneumoniae DNA or RNA (PCR) test positive, or rapid identification of Mycoplasma pneumoniae antibodies positive; 3. Heat course ≤ 5 days; 4. The total number of peripheral blood routine leukocytes is within the normal range; 5. The child's legal guardian or / and himself voluntarily participate in the study, and the legal guardian agrees and signs the informed consent form (while children ≥8 years of age need to voluntarily sign the informed consent form); 6. According to the researcher's judgment, the subject / legal guardian is believed to be reliable and able to comply with this plan, visit plan and medication arrangement. Exclusion Criteria: 1. Have a disease that needs to be distinguished from Mycoplasma pneumoniae pneumonia (MPP); 2. Patients with basic diseases such as primary immunodeficiency disease, acquired immunodeficiency syndrome, congenital respiratory malformation, abnormal lung development, aspiration pneumonia, lung malignancies, etc .; 3. Congenital abnormalities of heart and lung, combined with serious primary diseases such as cardiovascular, cerebrovascular, liver, kidney, and hematopoietic system, or any laboratory test indicators meet the following criteria: alanine aminotransferase (ALT), aspart Amino acid aminotransferase (AST)\> 2.0 times, serum creatinine (Cr)\> 1.5 times the upper limit of normal value (ULN); 4. Those who have been diagnosed with Mycoplasma pneumoniae in the past 3 months;