The utility model provides a compact structure type box-type transformer substation comprising a box body. The internal part of the box body is provided with a high-voltage chamber, a transformer chamber and a low-voltage chamber. The compact structure type box-type transformer substation is characterized in that a cable pit is formed by a hardened ground and wall enclosure arranged at the periphery of the hardened ground. The hardened ground and the wall enclosure have a waterproof structure. The high-voltage chamber is internally provided with a high-voltage inlet and outlet wire cabinet. The transformer chamber is internally provided with a transformer. The low-voltage chamber is internally provided with an inlet wire cabinet and an outlet wire cabinet. The outlet wire of the inlet wire cabinet is connected with the inlet wire end of the outlet wire cabinet. The outlet wire of the outlet wire cabinet is connected with power utilization equipment of users. According to the box-type transformer substation, the waterproof and moisture-proof effects of the formed cable pit can be effectively guaranteed so that internal cables are enabled to be constantly arranged in a dry environment, and long-term safety operation of the transformer substation can be guaranteed. Besides, wire connecting bars and connecting wires in a conventional capacitor compensation device can be omitted so that the structure is simple and reasonable, manufacturing cost is reduced, the beneficial effects are substantial and application and popularization are convenient.