There are circumstances in which estimation of a pipe condition is desired as a necessity for water utility companies. The purpose of the present invention is to provide a technique by which a deteriorated or defective condition on the inside and outside of a pipe can be estimated. In order to solve the aforementioned problem, a pipe condition detection system according to the present invention is characterized by comprising: a sensor unit that detects vibration data and pressure data from a pipe or a fluid in the pipe; and a determination unit that determines the condition of the inside and the outside of the pipe on the basis of the vibration data and the pressure data obtained by the sensor unit.
