The invention discloses a segment-cutting and sun-drying system for dried tomatoes. A tomato segment-cutting device is movable on sun-drying tables, moving parts are arranged on both sides of the sun-drying tables for bearing the tomato segment-cutting device, and the moving parts move on movement-guiding parts. The tomato segment-cutting device includes a body frame, a cleaning mechanism, a transferring mechanism, a conveying mechanism, a spreading mechanism, a cutting mechanism and a placing mechanism, and scattered equipment for workshop-cleaning-transportation-segment cutting-transportation-placing in the traditional tomato processing operation process is integrated into a set of operation equipment. The operation system can be used to realize the effect of integrating the following steps: tomato charging-tomato segment cutting-even placing on the sun-drying tables, thus avoiding the problems of consuming time, consuming labor, high cost and affecting the quality of processed driedtomatoes, etc. caused by two times of loading, transporting and transferring in the traditional processing process of dried tomatoes, and has characteristics that the operation system is high in automation degree, time-saving, labor-saving, low in cost, high in production efficiency and excellent in quality of finished products of dried tomatoes.