The invention discloses a processing method of synthetic rice applicable to a diabetic patient. The processing method comprises the following steps: firstly, preparing a first raw material group, namely mashed potatoes, a second group of raw materials, namely rice flour, corn flour and soybean flour, a third group of raw materials, namely Chinese chestnut powder, Chinese yam powder and banana powder and a fourth group of raw materials, namely propolis liquid, royal jelly, custard apples, edible oil, potato starch and water; secondly, uniformly mixing the fourth group of raw materials, adding into the third group of raw materials, and uniformly mixing; thirdly, uniformly mixing the first raw material group and the second group of raw materials, then uniformly mixing with the material obtained in the step 2, and extruding into a rice-like synthetic rice primary product applicable to the diabetic patient; and fourthly, drying to obtain the synthetic rice applicable to the diabetic patient, namely firstly carrying out hot air drying at the temperature of 50-110 DEG C, then blowing with hot air at the temperature of 15-35 DEG C, then carrying out microwave drying at the power of 200-400W, then carrying out hot air drying at the temperature of 30-50 DEG C, and finally carrying out hot air drying for 1-2 minutes at the temperature of 10-20 DEG C.