Abstract: In order to promote the pest management of pear orchard in Heilongjiang Province,based on years of field practice,this paper summarized the"4+1 times"chemical prevention and control technology on main diseases and insect pests of pear in Heilongjiang Province.This method could achieve control effect,reduced 3-4 time medications than conventional method,saved 500-600 yuan·hm-2 in cost.Reducing the dosage of pesticide is beneficial to the protection of ecological environment and the safety of pear production.