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Answer: We must strengthen the management of water and fertilizer in orchards, supply fertilizer and water before the flowering period, regulate the use of nitrogen fertilizers, drain water in time, and prevent water accumulation in orchards. Timely soil management to improve root growth conditions. At the same time, it is necessary to prevent and treat pear infestations, such as pear borer, pear borer, pear stem bee, etc. It should be noted in the prevention and treatment that high drug concentration may cause fruit drop. If the ground is dry, use small water and do not flood irrigation. Otherwise, it will accelerate the growth of nutrients and cause fruit drop.