The invention discloses cable plugging equipment and a cable plugging method. The cable plugging equipment comprises a heat-conducting bottom plate (1), wherein a sizing frame for sizing plugging mud is arranged on the bottom plate (1); a heater (10) for heating and fusing the plugging mud is arranged below the bottom plate (1) corresponding to the sizing frame; a cutting knife plate (8) for cutting and compacting the plugging mud is arranged on the bottom plate (1). The cable plugging equipment is simple in structure and easy to manufacture. The cable plugging method is simple and easy to perform, so that the working flow can be simplified, the working time can be shortened; the manufactured plugging material is flatly cut, smooth in surface, tight and seamless on bottom and side corners, so that the plugging qualified rate is increased.