The invention provides a high-flux indentation creep testing device for a gradient material, which comprises a heating device for heating a gradient sample, a pressure loading device for loading pressure on the gradient sample, a plurality of pressure heads for contacting the surface of the gradient sample and applying pressure load of the pressure loading device to the gradient sample, and an inductor for inducing axial displacement change of each piston rod, wherein the pressure loading device comprises a plurality of cylinder barrels arranged in parallel and at intervals, the piston rods with top ends inserted into the cylinder barrels in a sliding manner, and constant-pressure applying devices for pushing the piston rods to vertically move downwards, and the pressure heads are respectively arranged at the bottom ends of the piston rods. Through adoption of the high-flux indentation creep testing device of the invention, in a creep test process, creep performance of the gradient sample at each position can be contrastively analyzed by using time and displacement records only through sensing and recording the descending displacement of each piston rod by the inductor, and a creeptest for the gradient material can be accurately and efficiently performed.