High-sealing-performance check pump and hose applied to high-sealing-performance check pump

The utility model discloses a high-sealing-performance check pump and a hose applied to the high-sealing-performance check pump. The high-sealing-performance check pump comprises an outer cover, a pressing head, a spring and a one-way check valve. An accessory cavity is defined by the outer cover, and a material conveying hole is formed in the accessory cavity; the pressing head is installed in the accessory cavity in a pressing mode, and a discharging hole is formed in the outer portion of the pressing head; the spring is arranged in the accessory cavity, the spring is tubular, one end of the spring is connected with the outer cover in a sealed mode, the spring is connected and conducted with the material conveying hole, the other end of the spring is connected with the pressing head in a sealed mode, and the spring is connected and conducted with the material discharging hole; the hardness of the exterior of the one-way check valve is lower than that of the interior of the one-way check valve, the exterior