The utility model relates to the technical field of line connection, in particular to a waterproof quick line connector, which comprises a first connecting port and a second connecting port, a connecting rod is mounted at the bottom end of the first connecting port, a limiting rod is mounted at the top end of the second connecting port, and a spring is mounted at the bottom end of the limiting rod. And clamping blocks are mounted on the surfaces of the limiting rods. According to the waterproof rapid line connector, through the arrangement of the first connecting port, the second connecting port, the connecting rod, a limiting rod, a spring and a clamping block, when the waterproof rapid line connector is used, the second connecting port is placed on the surface of the first connecting port, the clamping block is held by hand to press downwards and wrap the surface of the second connecting port so that the limiting rod can be extruded downwards and the spring can be extruded, and the clamping block is arranged on the surface of the connecting rod in a sleeving mode; the clamping block is manually loosened, the spring can push the limiting rod to move upwards and drive the clamping block to abut against the connecting rod, and therefore the first connecting port and the second connecting port can be connected, the structure is convenient to install and disassemble, the structure can be rapidly installed, and the working process is reduced.