The utility model provides a pressure switch that can switching channel, it includes multiunit pressure detection passageway, position sensor and select switch, the front end that the pressure detection passageway all includes pressure import and pressure contact, each pressure import respectively organized be used for connecting the fluidic passageway that awaits measuring, the rear end connection pressure contact of pressure import, aforementioned position sensor is used for detecting the pressure signal of each pressure contact, the signal export is all connected through select switch to each pressure signal output of position sensor, by the select switch switching channel, selects the pressure signal of corresponding pressure detection passageway to export. The utility model discloses an adjust knob takes pressure scale, operating pressure that can the adjust pressure contact, the utility model discloses during the use, refuse at the pressure contact, the mistake is moved or during the trouble, can switch immediately to other passageways, guarantees pressure switch's correct action, can set up different action values to the pressure contact, the scene is the switching channel rapidly, satisfies pressure switch's under the various pressure values correct action.