The invention discloses an injection molding technology of an elliptical cover plastic product. The injection molding technology at least comprises the following technological processes of a materialstorage working section, an extrusion working section, mold opening, mold closing, injection and pressure maintaining, wherein temperature sections of a hot runner of a mold for performing injection molding comprise the first section with the temperature ranging from 247 DEG C to 250 DEG C, the second section with the temperature ranging from 265 DEG C to 270 DEG C, the third section with the temperature ranging from 260 DEG C to 265 DEG C, the fourth section with the temperature ranging from 265 DEG C to 270 DEG C, the fifth section with the temperature ranging from 270 DEG C to 275 DEG C andthe sixth section with the temperature ranging from 270 DEG C to 275 DEG C. According to the injection molding technology, the technological parameters of all the sections in the injection molding technology of the elliptical cover plastic product are accurately controlled, so that the quality of an injection molding fluid is controlled, moreover, the quality and the injection molding efficiencyof the injection molded product are improved, and the rejection rate is reduced.