Study on proteome is an emerging field in current life science research. The ultimate aim of new era is to illustrate expression patterns and biological function of all proteins. The concept, research method and application of proteomics in plant science are briefly introduced in this paper. It is generally acknowledged that the field of proteomics is based on the development and improvement of technology and method of two-dimensional electrophoresis(2D-E), mass spectrome-try(MS), protein chips, yeast two-h...