The invention discloses an internal type charging structure for a forklift truck. The internal type charging structure for the forklift truck comprises a front vehicle frame, an upper cover, a storage battery, a charger, a charger plug, a charger connector, a battery connector, a charger fixing plate and a connector fixing plate; a cavity is formed in the back end of the front vehicle frame; an opening is formed in the upper end of the cavity; the storage battery is arranged in the cavity; the charger fixing plate and the connector fixing plate are fixed above the storage battery; the charger is arranged on the charger fixing plate; the battery connector is arranged on the connector fixing plate; the charger is connected with the charger plug and the charger connector through cables respectively; the charger connector and the battery connector are mutually plugged; a T-shaped pull handle is fixed on the charger connector; the upper cover is fixed to the opening of the upper end of the cavity and is provided with a through hole; a rubber ring is arranged at the through hole; and the charger plug penetrates through the rubber ring. Through the mode, the internal type charging structure for the forklift truck can be convenient to charge the forklift truck and is simple in structure and convenient to use.