Fish protein synergist and preparation method thereof

The invention discloses a fish protein synergist and a preparation method thereof, and the preparation method comprises the following steps: 1, preparing materials: 80-120 parts of water; 8 to 15 parts of fish feed; 6-10 parts of a shrimp material; 0.5 to 1 part of compound protease; 3-5 parts of a growth substance; 2, water is heated, fish feed and shrimp feed are added into the water while the water is stirred, stirring is conducted for 4-7 h, and a sticky material is obtained; step 3, standing the sticky material in the step 2 for 2 hours, adding compound protease, and stirring to react for more than 15-18 hours to obtain a liquid mixture; and 4, adjusting the pH value of the liquid mixture in the step 3 to 6-7, and filtering to obtain a filtrate. According to the invention, the synergist and the growth substance are combined, so that the soil is activated, the growth property is improved, the method is green and environment-friendly, and the survival rate of vegetation is increased while the growth rate i