The invention discloses a biodegradable bionic 
fishing bait material and a preparation method thereof and relates to the technical field of artificial 
fishing baits. A main 
raw material of the biodegradable bionic 
fishing bait material is a blend of two or a plurality of types of degradable 
thermoplastic materials, such as 
polyurethane (TPU), polyhydroxyalkanoate (PHA), 
polylactic acid (PLA), polyhydroxypropionic acid-glycolide (
PLGA) and capryl glycol polycitrate (POC); an environment-friendly 
plasticizer is one or more of a compound of citrate, 
isosorbide, 
epoxidized soybean oil and the like; feeding characteristics of fish varieties are matched with a plurality of types of fish attracting components including 
corn starch, a plurality of types of amino acids, minerals, 
protein and the like, and an 
antioxidant for a bionic fishing bait, and the components are blended and granulated; a mixture is subjected to injection molding to obtain the bionic fishing bait with various colors and fish, 
shrimp and 
insect shapes. The bionic fishing bait prepared by the invention has advantages of a food fishing bait and the bionic fishing bait, and has a great attraction force on the taste senseof fishes; a product is adjustable in 
hardness and can be completely biodegraded, and is an 
ecological environment-friendly bionic fishing bait for attracting the fishes.