The invention relates to the technical field of fire-fighting boats, and discloses a platform type fire-fighting boat with an automatic lifting function, which comprises a boat body, a
cockpit is fixed above the boat body, a hydraulic rod is fixed above the
cockpit, a lifting platform is fixed above the hydraulic rod, and the lifting platform is fixed above the hydraulic rod. A water gun is fixed above the lifting platform, and an extension mechanism with a rescue function is arranged below the lifting platform; according to the platform type fire boat with the automatic lifting function, after a lifting platform is lifted by a hydraulic rod, an air cylinder is controlled to extend to drive a connecting sleeve to move in the vertical direction of a sliding rod, so that a rescue plate and a connecting seat are driven by a connecting rod to move in the direction away from the lifting platform under the limiting action of the sliding rod; when people on the rescue ship need to be rescued, the rescue plate extends out, so that trapped people can reach the fire-fighting ship through the rescue plate.