The invention relates to the technical field of electric light sources, and discloses a new energy street lamp auxiliary intelligent heat dissipation device, comprising a lamp body, an air inlet is opened inside the lamp body, and a fan and a refrigeration semiconductor are arranged inside the air inlet, so The bottom of the air inlet is provided with a working cavity, the interior of the working cavity is movably connected with a sealing strip, the outer part of the sealing strip is fixedly connected with a permanent magnet block, and the outer part of the permanent magnet block is movably connected with an electromagnetic push block, so The interior of the working chamber is provided with a heat dissipation pipe and an air guide pipe, and a temperature sensing component is provided on the inner top of the working chamber. Through the use of temperature sensing components, bimetallic sheets, threaded sleeves, connection blocks, control blocks, ejector rods and electric contact blocks, the effect of automatic cooling of intelligent control equipment can be achieved, which can effectively improve the use effect of the device and avoid low temperature environments. The heat dissipation work is still carried out under the hood, which effectively reduces the waste of energy.