Disclosed is a wave energy swaying type liquid metal magnetic fluid power generation floating tube which is composed of a hook ring (1), a floating tube shell (2), storage containers (3-1) and (3-2), a power generation channel (4), a magnet (5), electrodes (6), a power output system (7) and liquid metal (8). The power generation floating tube floats on the sea and sways along with the wave surge. The liquid metal (8) moves back and forth in the power generation channel (4) along with the swaying of the floating tube shell (2), and interacts with the magnetic field generated by the magnet and generates induced electromotive force; then the electricity power is output through the plate electrodes (6) and the power output system. The wave energy swaying type liquid metal magnetic fluid power generation floating tube of the invention has the advantages of high conversion efficiency, large power density, compact and simple structure, low cost and good mobility; and is easy for commercial popularization.