The invention relates to a gravel pre-filling device for filling a sand control screen with gravels, and belongs to the technical field of filling devices for filling sand control screens with gravels. The gravel pre-filling device comprises a frame, a vibrating motor, a fixing fixture, a filling water pipe, a filling tube and a filling head. The work panel is installed on the frame through a buffer spring, and the vibrating motor is installed on the part below the work panel of the frame. One side of the work panel is provided with the filling water pipe, and the end of the filling water pipe is provided with the filling head. According to the gravel pre-filling device for filling the sand control screens with the gravels, filling holes in the filling head can be selectively blocked or opened, thus sand control screens with different specifications and models can be filled with gravels, the problem of excessively high acquisition cost caused by replacing diverters of different specifications and models when the screens of different models and specifications are filled with gravels of different particle size of existing filling device is solved, the work efficiency of filling is improved, and the gravel pre-filling device is particularly applicable to the filling of the sand control screens.