The greenhouse beans are cultivated using chemical control technology, which can regulate the growth and development of the plants, which is conducive to increase flowering and conservation, and increase production. 1. Control plant type. After the emergence of green beans (short green beans), spraying 10 to 20 mg/L of gibberellic acid every 5 days for 3 times can extend the stem segments, increase branching, and promote flowering and scarring. The harvest period is 3 to 5 days ahead of schedule. The mid-growth of lentils, green beans, green soybeans, etc., spraying chlormequat and paclobutrazol can control the height of plants, reduce canopy closure, and reduce the occurrence of pests and diseases. The general concentration is: Chlormequat 20 mg/L, paclobutrazol 150 mg/L; 100 mg/L triiodobenzoic acid can also be used to control the soybean plant height and increase its yield. 2. Promote regeneration. In the late growth period of cowpea and lentil, in order to promote the germination of new shoots, the seed strains can be sprayed with a 20 mg/L gibberellin solution, and usually sprayed once every 5 days and sprayed twice. 3. Reduce shedding. If the temperature of flowering and podging is too high or too low, the beans and vegetables will fall and fall. In the flowering phase of green beans and lentils, the spraying of 5 to 15 mg/l of naphthalene acetic acid or 6 to 12 mg/l of p-chlorophenoxyacetic acid or 12 to 25 mg/l of gibberellic acid can reduce the fall of these crops. Hey, and can mature earlier. As the number of scabs increases, fertilisers must be added in order to achieve high yields. 4. Suppress light breathing. The photorespiration of crops consumes a large amount of assimilation substances, and inhibiting the photorespiration of crops can greatly increase crop yields. Sodium bisulfite is a photorespiration inhibitor of legume crops, and it is advisable to use the period of sodium bisulphite from flowering to podling. If the plant growth is weak, it can be used before flowering. Sodium bisulfite was used at a concentration of 30-60 mg/L on green beans and cowpeas and was used from the early flowering stage to the flowering stage.