An exhaust gas analyzing apparatus for analyzing exhaust gases from a combustion engine, the apparatus comprising: a first filter flow path provided with a first filter for passing the exhaust gas therethrough and a first sensor for detecting clogging of the first filter; a second filter flow path provided with a second filter for passing the exhaust gas therethrough and a second sensor for detecting clogging of the second filter; an exhaust gas analyzing part for analyzing the exhaust gas passing through the first filter or the second filter; a flow path switching mechanism for selectively passing the exhaust gas to the first filter flow path or the second filter flow path; a pulse purge mechanism provided in each of the filter flow paths (41, 42), the pulse purge mechanism supplying purge gas to each of the filters (5, 7) in a pulsed manner, and a control equipment (91, 104, 105) that is configured to perform that in the case where an output value of the sensor provided in one filter flow path, to which the flow path switching mechanism passes the exhaust gas, falls outside a predetermined range, the one filter flow path, to which the flow path switching mechanism passes the exhaust gas, is switched to the other filter flow path, and the pulse purge mechanism supplies the purge gas to the filter provided in the one filter flow path in a pulsed manner, characterized in that the control equipment (91, 104, 105) has a mode selection signal accepting part for accepting a mode selection signal for selecting from an automatic mode of automatically performing switching of the flow path switching mechanism in the case where the output value of the sensor falls outside the predetermined range and a manual mode of manually performing switching of the flow path switching mechanism by a user. a first filter flow path provided with a first filter for passing the exhaust gas therethrough and a first sensor for detecting clogging of the first filter; a second filter flow path provided with a second filter for passing the exhaust gas therethrough and a second sensor for detecting clogging of the second filter; an exhaust gas analyzing part for analyzing the exhaust gas passing through the first filter or the second filter; a flow path switching mechanism for selectively passing the exhaust gas to the first filter flow path or the second filter flow path; a pulse purge mechanism provided in each of the filter flow paths (41, 42), the pulse purge mechanism supplying purge gas to each of the filters (5, 7) in a pulsed manner, and a control equipment (91, 104, 105) that is configured to perform that in the case where an output value of the sensor provided in one filter flow path, to which the flow path switching mechanism passes the exhaust gas, falls outside a predetermined range, the one filter flow path, to which the flow path switching mechanism passes the exhaust gas, is switched to the other filter flow path, and the pulse purge mechanism supplies the purge gas to the filter provided in the one filter flow path in a pulsed manner, characterized in that the control equipment (91, 104, 105) has a mode selection signal accepting part for accepting a mode selection signal for selecting from an automatic mode of automatically performing switching of the flow path switching mechanism in the case where the output value of the sensor falls outside the predetermined range and a manual mode of manually performing switching of the flow path switching mechanism by a user.