The present invention provides a single-tube switching valve with a function of adjusting air pressure, which is mainly composed of a partial pressure chamber, an adjusting valve body, an adjusting knob, and an air pressure control valve. Through the partial pressure chamber, the adjusting valve body, the adjustment The knob and the design of the air pressure control valve allow the single-tube switching valve to have the functions of inflation, deflation and air pressure adjustment.本新型提供一種具有調節氣壓功能之單管切換閥，主要由一分壓腔、一調節閥主體、調節旋鈕、以及一氣壓控制閥所組成，透過該分壓腔、該調節閥主體、該調節旋鈕、以及該氣壓控制閥的設計，可讓單管切換閥具有充氣、洩氣與氣壓調節的功能。
