The invention relates to a seafloor pulse vortex detection probe. The seafloor pulse vortex detection probe comprises a sealing base, a sealing cover, a main radiating pipe, a plurality of auxiliary radiating pipes, a detection coil, an exciting coil and a watertight insertion-and-extraction connector. The sealing cover is fixedly arranged at the top of the sealing base, a sealing cabin is formed between the sealing base and the sealing cover, the main radiating pipe is arranged in the center inside the sealing cabin in a penetrating through mode, the auxiliary radiating pipes are circumferentially arranged inside the sealing cabin in a penetrating through mode at intervals, the detection coil is fixedly arranged on the outer side of the circumference surrounded by all the auxiliary radiating pipes, the exciting coil is fixedly arranged on the inner side of the circumference surrounded by all the auxiliary radiating pipes, the detection coil and the exciting coil are both fixedly connected with the bottom of the sealing base, one end of the watertight insertion-and-extraction connector is inserted inside the sealing cabin through the sealing cover, and is respectively connected with the detection coil and the exciting coil, and the other end of the watertight insertion-and-extraction connector is detachably connected with an external device. The seafloor pulse vortex detection probe is suitable for the seafloor sealed environment, and the good radiating effect can be guaranteed.