Rubber trees are often used for cutting and high-pressure propagation. Cutting propagation is simple, easy to survive and fast to grow. Generally, pruning is combined in late spring and early summer. Select annual lignified middle branches as cuttings, cut off the lower leaves, close the upper two leaves and bind them with plastic, or cut off the upper leaves for half a week to reduce water evaporation; In order to prevent the incision from losing too much milk and affecting the survival, plant ash should be used to smear the wound in time; Cutting the treated cuttings into seedbeds based on river sand or vermiculite; Keep the bed high humidity after insertion, and often sprinkle water on the ground (but don't sprinkle water) to improve the air humidity. Under the temperature of 18-25℃ and semi-shading, rooting takes about 2-3 weeks. It is also convenient to use high pressure at home and the success rate is high. Selecting biennial branches under high pressure, firstly girdling branches with the width of 1- 1.5 cm; Then wrap wet moss or peat soil around the wound, and finally wrap it tightly with plastic film, and wrap it at the upper and lower ends; 1-2 months later, the rooting branches can be cut off and put into a pot.