The invention discloses an urban automatic optimization modeling system based on a tilt camera. The system comprises a tilt image collection module, a tilt image processing module, a tilt model generation module, a modeling recognition module and a modeling optimization module, the tilt image collection module collects omnibearing ground object data of front, rear, left, right and vertical anglesthrough a tilt camera, and position information during photographing is recorded through GPS equipment. And the modeling of the whole city can be rapidly and accurately formed. And the range of the model needing to be optimized can be reduced, and the next step of targeted optimization is facilitated. According to different types of models and reasons for generating problems, targeted optimizationis carried out, data are obtained from existing resources, the models with the problems are optimized one by one, leakage checking and deficiency filling are carried out on overall city modeling, andthe integrity and accuracy of the overall city modeling are further improved.