The invention relates to the technical field of agriculture cultivation, and discloses a fertilizing method of pepper. The fertilizing method is characterized in that first drip irrigation fertilizing carried out from August in the same year, second drip irrigation fertilizing carried out in September, third drip irrigation fertilizing carried out in November and fourth drip irrigation fertilizing carried out in March or April in the next year are respectively carried out in a fruiting cycle of pepper, A water and fertilizer integration technology improves the quality and the output of pepper and improves the fertilizer utilization efficiency on the premise of reducing the fertilizing amount through adjusting the fertilizing scheme of the pepper in the fruiting cycle and cooperating a drip irrigation technology.