Abstract: To investigate the effect of 1-MCP pre-storage treatment combined with post-harvest treatment on apple quality,in this experiment,Fuji apples were used as test materials and treated with 1 μL/L 1-MCP before storage,and treated with different concentrations of 1-MCP at 3 and 5 μL/L after storage. The nutritional quality,hardness,physiological index,rot rate,and other indicators were determined with 7 days as determination period. The results showed that fumigated Fuji apples by 1-MCP could better ensure fruit quality.For 1-MCP dual treatment,1-MCP+ZH5.0 could better maintain the hardness and nutritional quality of the fruit than 1-MCP+ZH3.0.At the same time,the respiratory strength and the rate of ethylene formation were suppressed,and the storage quality was effectively ensured. 1-MCP could also effectively reduce the rate of fruit decay. In the double treatment,1-MCP+ZH5.0 could significantly reduce this indicator. The same pattern was also observed in inhibiting defense enzyme activity. In summary,1-MCP dual regulation can control physiology before storage and disease after storage.