As one of the most important staple food crop, wheat affords 25% carbohydrate and 20% protein demands of human. How to increase crop yield to meet the food requirement of increasing population has became a noticeable question. My research mainly focus on wheat yield breeding and grain yield related gene function. Recently, function of brassinosteroids and its signal transduction pathway have been reported beneficial to plant growth and stress resistance. Much attention has been paid on the relevance between BR and crop production. My major interest is BR and its signal transduction pathway how to participate the fine regulation of wheat grain development and grain yield.