[Objective] The aim was to establish a new method for detecting starch content by fluorescence.[Method] According to the characteristics of fluorescence analysis,each factor influencing starch content detection such as fluorescent reagent,reaction temperature and time were optimized and a new method for detecting starch content was established.[Result] Butyl rhodamine B was selected as fluorescent reagent,when its reaction concn.was 2.0 μmol/L,its fluorescence intensity and concn.showed good linear relation...