The invention relates to a method for improving the 
hybrid seed production yield of cabbages in facility, and belongs to the technical field of 
vegetable farming. The method includes the steps of seeding and 
seedling raising, 
land preparation and 
bedding, field planting of parent materials, 
bolting, bee depositing for fertilization, harvesting and the like. According to the method, seed productionof 
hybrid seeds of the cabbages in the facility is adopted, exotic other-cabbage 
pollen is effectively avoided, and the purity of the 
hybrid seeds is ensured; in the facility, black mulching film islaid, the growth of weeds can be effectively inhibited, the method also plays the roles of cooling and moisturizing the ground, and in this way, farm operation such as weeding and watering during beepollination can be reduced as far as possible; bees and mason bees are adopted to conduct matched 
pollination, and the mason bees are used for solving the problem that in a facility 
greenhouse, illumination is deficient, the temperature is high, the activity space is small, and bee 
pollination is deficient; the method not only can improve the yield of 
hybrid seed production, but also is low in cost, and reference is provided for facility seed production of other cruciferous crops.