The common diseases of Schizonepeta tenuifolia mainly include damping-off disease, stem blight and black spot disease, and the pests include cutworm, mole cricket, Spodoptera argentea and so on. In order to make Schizonepeta tenuifolia high yield and high quality, it is necessary to control the occurrence of pests and diseases scientifically. The following small series introduces the common pests and diseases of Schizonepeta tenuifolia and the control methods to reduce them. Two common diseases and insect pests of schizonepeta tenuifolia. Root rot is mostly released in July and August. Due to the high temperature and rainy weather, the aerial parts of Schizonepeta tenuifolia wilted rapidly after being infected by fungi, and the roots and rhizomes turned black and rotted. Control method: Pay attention to drainage. Before sowing, treat the soil with 15 kg of 70%dixone per hectare. At the beginning of the disease, 200 times of quintozene solution was used to irrigate the rhizosphere. 2. Rice sheath blight mostly occurs in May-June, which harms stems, leaves and flowers. Low temperature and rainy, the soil is very wet and easy to get. At the early stage of the disease, the stem of the seedling had brown water stains and black spots, and it expanded brown, and the stem base became thinner, and it fell down and died. Prevention and control methods: select improved varieties, strengthen field management and clean the countryside; Rotation with Gramineae crops; Do a good job in drainage. In case of cold and rainy weather, you need to call Bordeaux 1: 1: 100 once every 10 day, 2~3 times in a row. At the initial stage, 50% thiophanate-methyl 1500 times solution was used for control. Control methods to reduce pests and diseases of Schizonepeta tenuifolia. Strengthen fertilizer and water management, cultivate robust plants and improve disease resistance. Loosen the soil in time, pay attention to the matching supply of water and fertilizer in each growth period, and spray new high-fat film to preserve moisture, fertilizer and water to ensure a good growth environment and conditions for implants. 2. Combination of timely prevention and control. According to the characteristics of pests and diseases of Schizonepeta tenuifolia, timely application of pesticides and addition of new high-fat film can increase the efficacy, prevent the invasion of pests and diseases and effectively kill them. The infected branches of the implant should be cut off and cleaned in time, and the incision of the knife should be coated with anti-corrosion film to prevent the invasion of germs. Before overwintering, the soil should be treated to kill pests and diseases, and a new high-fat film should be sprayed to prevent the migration of pests and diseases. 3. In order to improve the yield of Schizonepeta tenuifolia, spraying Caiguozhuangdiling before flowering, young fruit stage and fruit expansion stage can generally enhance the quality of pollen fertilization, increase the rate of round fruit, effectively inhibit the overgrowth of branches and shoots, enhance the resistance to pests and diseases of Schizonepeta tenuifolia, and promote fruit development, which is the sustained high yield of Schizonepeta tenuifolia.