The invention provides a counter box body for an electric fishing line reel, and the counter box body is capable of controlling generation of noise even a brushless motor is provided with larger use power. In a counter box body (4), a winding reel (10) of an electric fishing line reel is driven by a brushless motor (12), the winding reel is installed on a fishing line reel body (1) and rotatable, and is used for winding fishing lines. The counter box body is provided with a box body (19), a circuit board (20), a plurality of capacitors (21), a liquid crystal display part (22), and a fishing line control part (23). The box body (19) is provided with a first mounting part and a second mounting part in a disposing adjacent to the first mounting part, at least one part of the box body is made of metal, the box body is fixed on the fishing line reel main body. The circuit board is mounted on the first mounting part. The plurality of capacitors are electrically connected with the circuit board and mounted on the second mounting part. The liquid crystal display part is mounted on the circuit board. The fishing line control part is mounted on the circuit substrate and controls the brushless motor and the liquid crystal display part.