Pressure detection device

The invention relates to a pressure detection device. The present invention makes it possible to easily remove an incomplete combustion product adhering to a temperature reduction member even in a state in which the sealing performance between the temperature reduction member and a pressure receiving member is improved. A pressure detection device (1) is provided with: a housing part that can be attached to a communication hole provided in an internal combustion engine; a diaphragm head (32) that is provided on one end side of the housing part and that receives the pressure of combustion gas from the internal combustion engine; and a buffer member (80) that is disposed on the diaphragm head (32) and that supplies the combustion gas to the diaphragm head (32) while lowering the temperature of the combustion gas. A female thread of a first buffer member (81) formed on the buffer member (80) is screwed with a male thread of a second buffer member (82) formed on the buffer member (80). 本发明涉及压力检测装置。即使在温度降低构件与受压构件的