The invention discloses a process for producing succinate coated starch in paper making. In the process, corn starch and water are mixed in a reaction vessel to obtain starch milk, heated up to the temperature of between 34 and 36 DEG C, and added with sodium hydroxide solution to adjust the pH value of the starch milk to between 9.3 and 9.6; the starch milk is added with sodium hypochlorite for oxidizing reaction; and in the reaction, the reaction temperature and the pH value are kept unchanged; the starch milk is added with sodium hydroxide solution again to adjust the pH value of the starch milk to between 8.8 and 9.2, and slowly added with succinate which accounts for 4.5 to 5.5 percent of the total weight of the absolute dry starch for esterification reaction; the pH value and the temperature are kept unchanged during reaction; after the esterification reaction, the starch milk is added with hydrochloric acid solution for neutralization until the pH value of the starch milk is between 5.8 and 6.2; and the neutralized starch milk is washed and dried to obtain the finished product. The product produced by the process has the advantages of low gelatinization temperature, good transparency of pasty liquid, film forming property and water retention property, higher stability, and good compatibility with other coatings.