In this talk, I will present a new type of spin-transfer torque. Like an electron, a magnon, the quantum of spin wave, has also spin. Thus, it is possible for magnons to transfer their spin angular momentum to a magnet, resulting in all magnonic spin-transfer torque. As an example, I will discuss the spin wave transportation through a transverse magnetic domain wall (DW) in a magnetic nanowire. A magnon carries opposite spins on the two sides of the DW. It is found that spin wave passes through a DW without reflection, and each magnon shall transfers 2 angular momentum to the DW. As a result, this magnonic spin-transfer torque can efficiently drive a DW to propagate in the opposite direction to that of the spin wave. This finding opens a door to the application of magnetic insulators in spintronic devices. The advantages of using magnetic insulators include smaller dissipation rates and low energy consumption.