PURPOSE: To easily select a large number of pressure measuring points by changing over-changeover valves by the command of a computer in a multi-point pressure measuring apparatus connecting a large number of the pressure measuring points by a pressure sensor and selecting the measuring points by the computer to measure pressure.

CONSTITUTION: A large number of pressure measuring points P1-Pn are connected to pressure measuring ports S1-Sn by pipings T1-Tn and respectively connected to two sets of changeover valves 2b in parallel through changeover valves 2a. The changeover valves 2b are connected to a pressure sensor 3a and the pressure sensor 3a inputs a pressure signal to a computer 4. The kind of the pressure sensor 3a is preliminarily inputted to the computer 4 so as to be matched with the measuring points, the order thereof and a pressure range and either one of the changeover valves 2a, 2b is selected by the command from the computer 4 to be operated to measure the pressure of the ncessary measuring point and the measured data is recorded on the computer 4 to immediately measure necessary pressure data.