1, planting can use common culture soil, water it and put it in the shade. Often spray water on the branches. You can increase the light when you start to spread the leaves. Apply light (nitrogen) fertilizer water once after all leaves are unfolded. Put it in a semi-shady place with even sunshine for normal management. 2. Pay attention to ventilation in summer and autumn. Potted plants should be moved to semi-shade around noon, and attention should be paid to ventilation. Exposed to the hot sun, the leaves will be scorched, curled and shed. At the same time pay attention to watering to prevent the soil from being too dry. 3. If you want to control leaf viewing manually, you can do it once between spring and summer and once between summer and autumn. Too much work will hurt trees. All leaves can be picked once in June and September, and bright red new leaves can grow after 10. Pay attention to two points: one is pruning after picking leaves; The second is topdressing one week before leaf picking. The key to success is to artificially control new leaves and strengthen fertilizer and water. 4. If the leaves are burnt in the scorching sun, all the burnt leaves can be removed in August, placed in a cool and semi-cool place, and lightly applied with compound solution of nitrogen, phosphorus and potassium, about twice a week. In this way, in autumn, bright red new leaves can grow. 5. After defoliation in winter, you can enter the dormant period, and you can apply a thin layer of nitrogen, phosphorus and potassium base fertilizer and carry out plastic pruning to make the branches and leaves redder in early spring of the following year. In case of extremely cold weather, bonsai should be placed in a warm place sheltered from the wind and the sun or in a sunny place indoors to avoid freezing. 6. The pests of red maple mainly include: red wax scale, cotton scale and stem borer. Control method of scale insects: brush a small amount with a toothbrush, and spray 1000 times of 25% iminophosphate emulsion in severe cases. Control method of stem borers: inject 2000 times of 40% omethoate into trunk pests with a syringe.