This paper takes the paddy grain as an example,from the intelligent application of the processing system,production control,effective integration of PLC technology,so as to en-hance the intelligent control of every link of paddy processing and production.With the support of PLC technology,the comprehensive effect of rice production and management can be en-hanced,higher rice yield can be obtained,energy consumption of processing and production can be reduced,and the optimization effect of processing system can be improved.