The invention belongs to the related technical field of fan silencing equipment, and discloses a fan silencer capable of measuring flow. The fan silencer comprises a housing and two pressure measuringconnecting tubes, and further comprises a sound absorbing material, wherein the housing forms an accommodating cavity; an air flue is arranged in the accommodating cavity; the sound absorbing material is filled between the air flue and the housing; at least one first pressure measuring point and at least one second pressure measuring point are arranged on the air flue; the first pressure measuring point and the second pressure measuring point are arranged in a spaced mode; the two pressure measuring connecting tubes are separately arranged on the housing, and separately communicate with the first pressure measuring point and the second pressure measuring point, so that pressure at two points of the air flue is detected, and therefore, flow of the fan is obtained according to the detectedpressure. The silencer can organically integrate a silencing function and a flow measuring function, is simple in structure, is small in pressure loss, and is good in noise reduction effect.