Abstract:In order to achieve the combination of potted rice seedling transplanting and technology of mulchfilm, a kind of walktype potted rice seedling transplanting mechanism was designed. The process of seedling picking, conveying, film perforating and cooperating transplanting was completed by a set of rotary mechanisms. According to the working principle of the transplanting mechanism, kinematic theory model was set up and digital optimization goals were set. The computer aided analysis and optimization software of the transplanting mechanism based on Visual Basic 60 was developed. A set of parameters of the transplanting mechanism which met the requirements of transplanting were obtained by optimization. The twodimensional structure of the transplanting mechanism was designed. Threedimensional model was established. The virtual prototype simulation was completed by ADAMS software. The trajectory and attitude verification tests were carried out on the prototype using the test bench and highspeed photography technology. The results of bench test, simulation analysis and theoretical analysis were almost in agreement, which verified the rationality and correctness of the institutional design. The seedling pickup test, film perforating test and transplanting test were completed on the test bench. The results showed that the success rate of seedlings pickup was 90.4%. The success rate of transplanting for films of straw fiber and plastic was 87.5% and 82.5%, respectively, the results showed that the length and width of the film holes were good, which could meet the requirements of walktype potted rice seedling transplanting mechanism on film perforating part.