High voltage cable clamp features easy installation, low cost, safety and reliability. High voltage cable clamp can be used to cut off the main cable without stripping the insulation layer of the cable. The joint is completely insulated and can be charged. It can be branched at any position on the cable. There is no need to use terminal boxes or distribution boxes. The high voltage cable clamp is resistant to distortion, shock, water and corrosion. The use of High voltage cable clamp for cable branching has obvious comprehensive benefits, and the cost performance is superior to the traditional connection method.