The invention relates to a fruit tree branch drawing effect evaluation method based on skeleton corner detection. The fruit tree branch drawing effect evaluation method based on skeleton corner detection includes the steps: determining the optimal branch drawing angle of a fruit tree to be detected; acquiring the image information of the branch drawing part of the fruit tree; preprocessing the acquired image information; utilizing a skeleton algorithm to process the acquired image information; extracting the branches of the fruit tree, and using corner detection to find the intersection points between the branches and the trunk; and using a cosine law to calculate the branch drawing angle. The fruit tree branch drawing effect evaluation method based on skeleton corner detection can quickly solve the quantitative detection problem of branch drawing effect of apple trees, can provide scientific basis for modernization and intelligent production of an apple orchard, can lay a solid foundation for growth of fruit trees and reconstruction of old orchards in the future, and can fill the blank for accuracy detection for the branch drawing agriculture in China.