An automated analyzer, comprising: a plurality of measurement units (2100, 2200,..., 2900) including a measurement section which is configured to measure a sample; a suction container connected to the plurality of measurement units through a plurality of first paths (A1,..., A9), each first path connecting one measurement unit to the suction container; a vacuum exhaust system connected to the suction container through a second path (G, H, J); and a discharge section connected to the suction container through a third path (B, C); a pressure adjustment mechanism disposed in the second path (G, H, J); the automated analyzer characterized by: a control section which is configured to perform control such that the suction container and the discharge section are vacuum-exhausted by the vacuum exhaust system, wherein: the discharge section is at least one of a flow path (D, E, F) and a container which provides a space for temporarily storing a waste liquid; one end of the pressure adjustment mechanism is connected to the suction container and another end of the pressure adjustment mechanism is connected to the vacuum exhaust system; the discharge section is connected to the vacuum exhaust system through a fourth path (D, R, M, J); the discharge section is controlled so that it can be vacuum-exhausted by the control section and the vacuum exhaust system; a blockable valve body is provided at every first path (A1,..., A9). a plurality of measurement units (2100, 2200,..., 2900) including a measurement section which is configured to measure a sample; a suction container connected to the plurality of measurement units through a plurality of first paths (A1,..., A9), each first path connecting one measurement unit to the suction container; a vacuum exhaust system connected to the suction container through a second path (G, H, J); and a discharge section connected to the suction container through a third path (B, C); a pressure adjustment mechanism disposed in the second path (G, H, J); the automated analyzer characterized by: a control section which is configured to perform control such that the suction container and the discharge section are vacuum-exhausted by the vacuum exhaust system, wherein: the discharge section is at least one of a flow path (D, E, F) and a container which provides a space for temporarily storing a waste liquid; one end of the pressure adjustment mechanism is connected to the suction container and another end of the pressure adjustment mechanism is connected to the vacuum exhaust system; the discharge section is connected to the vacuum exhaust system through a fourth path (D, R, M, J); the discharge section is controlled so that it can be vacuum-exhausted by the control section and the vacuum exhaust system; a blockable valve body is provided at every first path (A1,..., A9). the discharge section is at least one of a flow path (D, E, F) and a container which provides a space for temporarily storing a waste liquid; one end of the pressure adjustment mechanism is connected to the suction container and another end of the pressure adjustment mechanism is connected to the vacuum exhaust system; the discharge section is connected to the vacuum exhaust system through a fourth path (D, R, M, J); the discharge section is controlled so that it can be vacuum-exhausted by the control section and the vacuum exhaust system; a blockable valve body is provided at every first path (A1,..., A9).