There are few pests and diseases in Ligustrum lucidum, and the main pest is longicorn. There are three prevention methods: (1) If you see fresh insect droppings in spring, inject 80% dichlorvos EC into the insect holes with a syringe and seal the insect holes with yellow mud. (2) Artificial killing of longicorn beetles in July. (3) The pest can be controlled by burying 3-4 mothballs in each pot of Ligustrum lucidum bonsai soil.