A silencer, comprising: a main body (105, 145) including an outer tube (82, 132) closed at front and rear ends thereof, to which an exhaust connection tube (81, 131) to which an exhaust pipe extending from an engine side is connected and a discharge pipe for discharging exhaust gas to the outside therethrough isconnected, respectively, and a first partition wall (86, 136) and a second partition wall (87, 137) provided in order from the upstream side in the main body (105, 145) such that the inside of the main body (105, 145) is partitioned into a first chamber (101, 141) and a resonance chamber (100, 140) by the first partition wall (86, 136) and is partitioned into the resonance chamber (100, 140) and a second chamber (102, 142) by the second partition wall (87, 137) and a conduit (91, 151) is supported on the first partition wall (86, 136) and the second partition wall (87, 137), wherein the conduit (91, 151) has a downstream end portion configured from a tubular member including a conduit discharge port which extends through the main body (105, 145) and discharges exhaust gas to the outside, such that exhaust gas is discharged to the outside by both of the conduit discharge port and by the discharge pipe, and the tubular member includes a resonance communication hole which communicates with the resonance chamber (100, 140) and an upstream side communication hole and a downstream side communication hole which communicate with the second chamber (102, 142); and a closing portion which closes an exhaust path at an intermediate location of the tubular member or a throttle portion (111, 158) which throttles the exhaust path is provided between the upstream side communication hole and the downstream side communication hole in the inside of the tubular member. a main body (105, 145) including an outer tube (82, 132) closed at front and rear ends thereof, to which an exhaust connection tube (81, 131) to which an exhaust pipe extending from an engine side is connected and a discharge pipe for discharging exhaust gas to the outside therethrough isconnected, respectively, and a first partition wall (86, 136) and a second partition wall (87, 137) provided in order from the upstream side in the main body (105, 145) such that the inside of the main body (105, 145) is partitioned into a first chamber (101, 141) and a resonance chamber (100, 140) by the first partition wall (86, 136) and is partitioned into the resonance chamber (100, 140) and a second chamber (102, 142) by the second partition wall (87, 137) and a conduit (91, 151) is supported on the first partition wall (86, 136) and the second partition wall (87, 137), wherein an outer tube (82, 132) closed at front and rear ends thereof, to which an exhaust connection tube (81, 131) to which an exhaust pipe extending from an engine side is connected and a discharge pipe for discharging exhaust gas to the outside therethrough isconnected, respectively, and a first partition wall (86, 136) and a second partition wall (87, 137) provided in order from the upstream side in the main body (105, 145) such that the inside of the main body (105, 145) is partitioned into a first chamber (101, 141) and a resonance chamber (100, 140) by the first partition wall (86, 136) and is partitioned into the resonance chamber (100, 140) and a second chamber (102, 142) by the second partition wall (87, 137) and a conduit (91, 151) is supported on the first partition wall (86, 136) and the second partition wall (87, 137), wherein the conduit (91, 151) has a downstream end portion configured from a tubular member including a conduit discharge port which extends through the main body (105, 145) and discharges exhaust gas to the outside, such that exhaust gas is discharged to the outside by both of the conduit discharge port and by the discharge pipe, and the tubular member includes a resonance communication hole which communicates with the resonance chamber (100, 140) and an upstream side communication hole and a downstream side communication hole which communicate with the second chamber (102, 142); and a closing portion which closes an exhaust path at an intermediate location of the tubular member or a throttle portion (111, 158) which throttles the exhaust path is provided between the upstream side communication hole and the downstream side communication hole in the inside of the tubular member.