Through the comparative analysis of Red Fuji apple surface cracks and weather conditions at the same time from 1991 to 2013 in Wanrong County, the correlation between fruit surface crack grades and such meteorological factors as temperature, precipitation, sunshine, humidity, and precipitation days is studied to search for the key factors influencing Red Fuji apple surface cracks, by using Excel and SPSS software. The results show that sunshine duration in early August, rainfall in September, relative humidity in September, and rainfall in June affect surface cracks. Fruit surface crack grades are negatively correlated with precipitation and relative humidity in September and precipitation in June, but positively with sunshine duration in early August.