Abstract: To elucidate the relationship between leaf and flowering characters, and establish a universal identification standard for appearance quality of Phalaenopsis Aphrodite , taking Phalaenopsis aphrodite without pedicels as test material, the length, width, thickness and leaf area of leaves were investigated, and then six flower characters such as the number of flowers after flowering were investigated. Correlation analysiswas made by Excel 2017 and SPSS 19.0. The results showed that the leaf characters of Phalaenopsis Sogo Yukidian‘V3’had a high correlation with flower characters after flowering. The length of the first, second, third leaf had a very significant correlation with flower diameter, the correlation coefficients was 0.552, 0.236 and 0.167, respectively. It was predicted that the flower diameter was greater than 7.1 cm and the petal thickness was greater than 1.12 mm when the length of the first, second and third leaves was at least 20.2 cm, 17.8 cm and 13.6 cm, respectively. That is to say, the longer the first three mature leaves are, the more number of flowers become, the longer flower diameters become, so that the quality of flowering is higher. Using this simple leaf character, we can predict the flower quality effectively, and it is a simple and feasible method for screening plant seedling.