A particulate matter concentration measurement apparatus, relating to the technical field of environment monitoring devices. The apparatus (10) comprises: an air inlet pipe (101), a piezoelectric transducer (102), and a control unit (103). A first end of the air inlet pipe (101) is communicated with the piezoelectric transducer (102); the piezoelectric transducer (102) is connected with the control unit (103); the air inlet pipe (101) is used for conveying a gas to be measured into an inner cavity of the piezoelectric transducer (102); the piezoelectric transducer (102) is configured to generate piezoelectric signals under impacts of particulate matters in the gas to be measured and to send the piezoelectric signals to the control unit (103); and the control unit (103) is configured to measure the flow of the gas to be measured input into the piezoelectric transducer (102) and to determine, according to the flow of the gas to be measured and to an impulse frequency generated by the piezoelectric signals, the
