Abstract: Using processing technology of computer image to recognize all features of vegetable seedlings, and conducting analysis and judgment about their growing states can provide necessary information for all operations, such as transplanting and thinning of seedlings in vegetable production. The research results show that this method may quickly and accurately identify the profile and position coordinate of vegetable seedlings, may make the correct judgment on the growing states and environments, and may provide the reliable theoretical foundation for related automatic operations in vegetable production.