Abstract: Importance of plant protection machinery and current situation of plant protection machinery industry in Shandong Province were briefly introduced.Results of supervision and random inspection of plant protection machinery in Shandong Province from 2010 to 2019 were systematically analyzed.Combined with product qualification rate，unqualified items and product variety changes，reasons for quality problems of plant protection machinery and industry development trend were analyzed.It is of great significance to improve quality of plant protection machinery.