Pressure sensor fixer

The utility model discloses a pressure sensor fixer which comprises an infusion tube, a Murphy's dropper, a wash tube liquid connecting end, an upper clamping belt and a lower clamping belt, a needle tube is arranged on the upper portion of the Murphy's dropper, the needle tube is movably inserted in the lower surface of the wash tube liquid connecting end, a connecting tube is arranged on the lower portion of the Murphy's dropper, and the connecting tube is connected with the upper clamping belt. The infusion tube is movably connected to the connecting tube in a sleeving mode, the upper clamping belt is annularly hooped to the lower end of the outer wall of the flushing liquid connecting end, a necking part is arranged at the lower end of the flushing liquid connecting end, the upper clamping belt is hooped to the necking part, the lower clamping belt is annularly hooped to the outer wall of the upper end of the infusion tube, and buckles are installed on the upper clamping belt and the lower clamping belt i