The invention discloses a compound plug removal technological method for an offshore oil field injection well. The compound plug removal technological method for the offshore oil field injection well is characterized by comprising the following steps of forwards extruding stratum pretreating agent, closing the well for 24 hours, forwards extruding prepad fluid, forwards extruding spacer fluid, forwards extruding oxidative plug removable agent, closing the well for 24 hours, forwards extruding processing agent, forwards extruding postpad fluid, forwards extruding displacing liquid, and finishing construction. The stratum pretreating agent comprises cocoamidopropyl betaine, coconut diethanol amine and sodium lignin sulfonate, the mass ratio among cocoamidopropyl betaine, coconut diethanol amine and sodium lignin sulfonate is 1:1:1, and the use mass concentration is 15%. The prepad fluid is hydrochloric acid, and the mass concentration is 10%. The spacer fluid comprises a compound of tartaric acid, fatty alcohol ether sulfosuccinic acid solution, the mass ratio between tartaric acid and fatty alcohol ether sulfosuccinic acid solution is 2:1, and the mass concentration is 45%. The oxidative plug removal agent comprises a compound of calcium oxide and tert-Butyl hydroperoxide, the mass ratio of calcium oxide and tert-Butyl hydroperoxide is 3:1, and the mass concentration is 35%. The processing agent comprises fluoboric acid, wherein the mass concentration is 13%. The postpad fluid comprises hydrochloric acid, wherein the mass concentration is 10%. The displacing liquid is water injected and allocated on site.