Preparation method of instant high-calcium fish sausages

The invention discloses a preparation method of instant high-calcium fish sausages, which comprises the following steps: (1) soaking freshwater fish processing byproducts in an aqueous solution of malic acid to form a mixture, putting the mixture into a vacuum box, vacuumizing, and maintaining the pressure; taking out after pressure maintaining; (2) preparing a dried bamboo shoot extracting solution and an isoleucine solution, mixing the mixture with the dried bamboo shoot extracting solution and the isoleucine solution, putting the mixture into a closed container, heating to 60+/-10 DEG C, keeping the temperature constant for 1-2 hours, heating to 120-130 DEG C, keeping the temperature constant for 15-20 minutes, cooling, and pouring out substances in the container; (3) carrying out combined treatment on the poured substances by using a colloid mill and a homogenizer, treating by using a ball mill, and carrying out industrial-grade dynamic high-pressure micro-jet treatment to obtain acalcium-rich superfine f