The invention relates to manioc modified starch and a production method thereof. The manioc modified starch is prepared by activating a raw material native manioc starch, adding succinic anhydride, washing, dehydrating, drying, smashing and screening. In the invention, a succinic acid ester group is introduced based on phosphate double starch, so that the gelatinization temperature of the phosphate double starch can be effectively reduced, the viscosity of the phosphate double starch is improved, the gel property of the starch paste liquid is improved, hashed, soft, rusty, free water phenomena and the like are prevented from occurring to meat products, the elasticity and frost resistance of the meat product are improved, the taste of the products is improved, and the shelf life is prolonged; and simultaneously, smooth section and good mouthfeel are endowed to the products, and the quality of the meat product is improved.