There are five methods to control apple diseases and insect pests: plant quarantine, agricultural control, biological control, physical control and chemical control. Plant quarantine is a measure issued by the state to manage and control plants and their products, especially seeds and seedlings, to prevent the spread of dangerous pests and diseases. Agricultural control means planting control. Through scientific management, we will create conditions conducive to the growth of apples and not conducive to the survival of pests, and minimize the occurrence of pests and diseases. Biological control refers to the use of beneficial organisms or biological agents to control pests and diseases. This method is pollution-free and does not destroy the ecological balance. Physical prevention and control is the use of heat, electricity, radiation and surgical measures to control pests and diseases. Chemical control is the use of chemical pesticides to control pests and diseases. This method is the most widely used and effective measure at present. However, because many pesticides have toxic and side effects, they should be used with caution in agricultural production. In pest control, the above measures should be comprehensively utilized according to local conditions to control the harm of harmful organisms below the economic allowable level.