The invention relates to a monocular vision positioning method for intelligent grading of table setting for a table top of a Chinese banquet. The method comprises the steps of 1 designing a matched black and white calibration board according to the table top of the Chinese banquet; 2, establishing a coordinate system model for the monocular vision positioning method for intelligent grading of table setting for the table top of the Chinese banquet; 3, horizontally placing the black and white calibration board on the blank of the table surface of the Chinese banquet, acquiring n table surface table setting images; 4, calibrating a camera shooting the table surface table setting images to obtain camera internal parameters and distortion parameters and the rotation vector and the translation vector of each image; 5, using an inverse perspective projection transformation algorithm to convert the table surface table setting images into table top right top view so as to meet the requirementsof single set of tableware identification and positioning; and 6, performing image global registration by using an SURF feature point detection algorithm, so as to meet the requirements of relative position calculation between multiple sets of tableware groups. According to the method, the problem of measuring the real distance between tableware from table surface table setting images under different visions can be solved.