Abstract: In view of problems such as damage of potted seedling and complex structure of transplanting end actuator，function model of transplanting end actuator was established by using TRIZ innovation theory，technical contradiction was expounded，principle of invention was determined according to contradiction matrix，the most suitable solution to solve technical contradiction was determined，and a duck beak transplanting end actuator with simple structure and water supply was designed.Results showed that TRIZ theory could greatly improve quality of innovative products and shorten research and development cycle.