The invention relates to the technical field of interplanting of vegetables, in particular to an interplanting method for Chinese cabbages and hot peppers. The Chinese cabbages and the hot peppers are subjected to reasonable interplanting treatment, so that the hot peppers and the Chinese cabbages carry out biological growth competition, thereby reducing weeds in the hot peppers, reducing a weeding rate in a hot pepper planting process, further increasing the yield of the hot peppers, guaranteeing the weight of single hot pepper, increasing the weight of single hot pepper by 2-4g in comparison with that in a conventional interplanting way for Chinese cabbages and hot peppers, and increasing the weight of single Chinese cabbage in comparison with that in the single way; and drip holes are not found in leaves of the Chinese cabbages, so that the problem that a great number of holes are formed in the Chinese cabbages due to the fact that the Chinese cabbages are planted by the conventional technology at night is solved, thereby guaranteeing the quality of the Chinese cabbages.