This invention is related to a waterproof electrical connector which comprises an insulation body, a metal shell, a plurality of terminals, a waterproof rubber, and a waterproof rubber ring. The insulation body includes a rubber core and a tongue blade, the tongue blade extending outward from the rubber core. The metal shell surrounds the insulation body and forms a coupling space, wherein the metal shell is a seamless structure. These terminals are fixed in the rubber core, one end of the terminals is located in the tongue blade, and the other end of the terminals pierces through the side of the rubber core away from the tongue blade.
The waterproof rubber is located at the side of the rubber core away from the tongue blade, and connects the metal shell, the rubber core, and these terminals. And the waterproof rubber ring surrounds the front end of the metal shell. Compared to the prior art, this invention of the waterproof electrical connector not only has the smaller whole volume, but also has the higher strength, is not easy to be deformed, and is more durable.