The invention discloses a grouting sleeve connection process for precast an elevated protective fence plate, The process comprises the steps of, 1), fixedly setting a plurality of grouting sleeves ina column on the inner side of the fence plate during the prefabrication process of the fence plate, step 2, inserting corresponding longitudinal reinforcing bars into the grouting sleeve, all longitudinal reinforcing bars are tied and fixed with the reinforcing bars cage in the fence board, 3, pouring concrete, 4, suspending the formed fence plate, insert the connecting reinforcing bars reserved on the main body structure into the correspond grouting sleeve, and 5, injecting the high-strength non-shrinkage cement grouting material into the grouting sleeve through the grouting hole through thegrouting pipe to realize the fixed connection between the main body structure and the fence plate. The grouting sleeve connection process is convenient and fast for construction, realizes the full-prefabricated assembling type of the protective fence board in the real sense, and avoids the trouble of secondary pouring on the construction site.