The utility model relates to a water storage pressure barrel with a quick joint. The water storage pressure barrel comprises a barrel body unit and a joint, wherein the joint is provided with a fixedly connected end part connected to the barrel body unit, an outer side end part reverse to the fixedly connected end part, an annular surface extending to the outer side end part from the fixedly connected end part, a leakage-stop ditch which approaches to the outer side end part and is sunken on the annular surface and a fastening ditch which is arranged between the leakage-stop ditch and the fixedly connected end part and sunken on the annular surface. The joint is provided with the leakage-stop ditch and the fastening ditch, is matched with a leakage-stop ring and an insertion pin to quickly install the joint with a pipeline, so that the purposes of connecting stably and proofing the leakage reliably are achieved.