Abstract： Objective The discussion cough changeability asthma (CVA) diagnosis treatment,enhances the clinical diagnosis which rate should get sick.Methods The review analysis 65 example children cough the changeability asthma's clinical diagnosis material.Results 65 example babies pass through the treatment,shows results 37 examples (56.92%),effective 25 examples (38.46%),invalid 3 examples (4.62%).Total effectiveness 95.38%.Conclusion To the chronic coush baby,the long-term antibiotic treatment is invalid.should paramount consideration CVA,the early test bronchial tube relaxant treatment,once diagnoses,namely gives the regular antiasthmatic treatment,prevents the development is the typical asthma.