The invention discloses a method for synchronously preventing and controlling fruit cracking and a fruit shrinking disease of ziziphus jujuba mill, namely, key mineral element supplementation, chemical prevention and growth regulator application are combined. The method is characterized in that soil fertilization is carried out by mixing potassium sulfate and manganese sulfate according to a certain proportion, and sodium silicate and calcium chloride are sprayed on leaves, so that key mineral elements and beneficial elements can be effectively supplemented, nutrient balance can be regulated, and the resistance is increased; 6-BA (Benzyladenine) is sprayed on the leaves in an early stage, so that pericarpic cell division is stimulated, and elasticity of jujube peel is enhanced; NAA (Naphthalene Acetic Acid) is sprayed in a later stage, so that maturing of jujube fruits is delayed, and a cloudy and rainy period in the early of mid September is avoided; mancozeb is sprayed on the leaves, so that pathogenic bacteria on body surface can be effectively killed, a layer of dense protective medicine membrane is formed on the surface of crop, and germination and invasion of the pathogenic bacteria are inhibited. According to the method disclosed by the invention, the morbidity of the fruit cracking and the fruit shrinking disease of the ziziphus jujuba mill can be synchronously and obviously reduced, and a total diseased fruit rate can be reduced from 80 to 100 percent to 20 percent or less. A technology is applied to prevention and control of the fruit cracking and the fruit shrinking disease of the ziziphus jujuba mill, the method is simple, the cost is low, the prevention and control efficiency is high, and the effect is lasting.