The utility model discloses a high pressure deep well water filling packer, which consists of an upper joint, an upper coat, a connection sheath, a lock ring sheath, an inner central pipe, a rubber sheath, a bridge joint, a lower coat, a connection head and a lower joint. An upper piston and a lower piston are arranged in a valve cavity enclosed by the upper joint and the upper coat. An upper hole clip spring and a lower hole clip spring are arranged on the top of the upper coat. The upper piston is arranged between the upper hole clip spring and the lower hole clip spring. A shaft clip spring is arranged on the lower end of the upper joint. The lower piston is arranged on the lower part of a pressure guiding hole and the upper part of the shaft clip spring. The utility model adopts two pistons in the wash well valve cavity, therefore, the upper joint and the upper coat are interlocked under the positive and negative acting force of two small pistons in water filling process, thereby guaranteeing the continuous contact of the upper joint and the upper coat, avoiding worm unset and guaranteeing reliability of base sealing.