The utility model provides a dimethyl ether supplying device for a pitch storing and transporting tank truck, and relates to the heating application of clean energy and the heating application of organic heat carriers. The dimethyl ether supplying device for the pitch storing and transporting tank truck enables dimethyl ether to be vaporized for being specially supplied to heat the pitch storing and transporting tank truck. The dimethyl ether supplying device for the pitch storing and transporting tank truck is arranged in a pitch station and is connected with a combustion engine. The dimethyl ether supplying device for the pitch storing and transporting tank truck is characterized in that the dimethyl ether supplying device for the pitch storing and transporting tank truck comprises a dimethyl ether liquid fuel tank, a heat carrier heating and vaporizing device and a T-type filter. The dimethyl ether liquid fuel tank, the heat carrier heating and vaporizing device and the T-type filter are connected in sequence, the combustion engine is connected with the T-type filter, and the dimethyl ether liquid is stored in the dimethyl ether liquid fuel tank and is fed to the combustion engine for being used after being vaporized through temperature rising through the heat carrier heating and vaporizing device. According to the dimethyl ether supplying device for the pitch storing and transporting tank truck, the dimethyl ether is used as combustion fuel for heating the pitch storing and transporting tank truck, heating efficiency is high, carbon dioxide emission is low, and the environment is better protected.