What should be done in case of recurrent respiratory tract infections in children? 1, regulation of immune function to improve immunity: BCG polysaccharide nucleic acid, transfer factor, pidomod, etc. are immunomodulators, have a strong non-specific immunomodulatory function, can effectively activate the giant eosinophils and T lymphocytes, enhance the cellular immune function and regulate the level of humoral immunity, so as to significantly improve the therapeutic effect of recurrent respiratory tract infections in children, clinical selective application. 2, supplementation of trace elements and various vitamins: iron, zinc, vitamin A, vitamin C, vitamin B, etc. can promote the synthesis of various enzymes and proteins in the body, promote the development of lymphoid tissues, maintain the normal nutritional state and physiological functions in the body, and enhance the body’s resistance to disease. 3, reasonable use of antiviral drugs and antibacterial drugs: repeated respiratory infections in childhood cause damage to the structure of the bronchial wall, the anti-microbial airway contouring rate decreases, the cilia purification function and local defense function is seriously reduced, making it difficult for the bacteria to be cleared and the formation of chronic infection foci. Therefore, the rational use of antimicrobial drugs is particularly important to strictly grasp the indications, application dose and method of antimicrobial drug use, otherwise it will not only fail to play a therapeutic role but also lead to the development of drug resistance of pathogenic bacteria or alternating flora and mixed infection of multiple pathogenic microorganisms. Antiviral treatment can choose ribavirin, interferon, Chinese medicine, etc. Human alpha-interferon is effective for viral infections, nebulized inhalation local treatment is more effective than intramuscular injection, should be used early. Although the hormone can quickly reduce the symptoms to achieve immediate results, but can make the child’s immune function further decline, and constantly lead to new infections, so that infection and low immune function to form a vicious circle. 4, other usual strengthen nutrition, reasonable diet: correct unreasonable eating habits and food structure, avoid passive smoking and odor stimulation, keep indoor air fresh, appropriate arrangements for outdoor activities and physical exercise, active prevention and treatment of various chronic and primary diseases, such as vitamin D deficiency disease, malnutrition and anemia, etc. In conclusion, the incidence of pediatric recurrent respiratory tract infections is high and the pathogenesis is complex. In addition to physiological factors, it is difficult to be explained by a single theoretical factor or doctrine. Therefore, for recurrent respiratory tract infections, a comprehensive analysis and integrated treatment are necessary to achieve the expected therapeutic effect.