A sample analyzer, comprising: a plurality of container setting units (13, 14, 15) for setting a plurality of liquid containers (5, 6, 7, 8) accommodating liquids, wherein each of liquid containers set in the plurality of container setting units (13, 14, 15) is set therein with a lid removed; a detecting unit configured to perform a measurement operation for a sample using the liquid; a liquid suctioning unit including a suction tube for suctioning the liquid from at least one of the plurality of liquid containers (5, 6, 7, 8); a plurality of lid placing sections (16a-c, 32-34) for placing the lid of at least one of the plurality of the liquid containers (5, 6, 7, 8), the plurality of lid placing sections (16a-c, 32-34) comprises a plurality of first lid placing sections, and a plurality of second lid placing sections (16a-c); a transporting apparatus configured to transport sample containers containing samples; and a sample suctioning unit configured to suction a sample accommodated in a sample container transported by the transporting apparatus; wherein a part of the plurality of lid placing sections is provided in the transporting apparatus, wherein the transporting apparatus comprises a transport path configured to transport the sample containers in a longitudinal direction (X direction); wherein the plurality of lid placing sections (16a-c, 32-34) are arranged in a different region from a region in which the transport path is provided, characterised in that: the plurality of container setting units are for setting a plurality of types of liquid containers (5, 6, 7, 8) accommodating liquids, the plurality of the first lid placing sections are configured to accommodate small lids among the lids of the plurality of liquid containers; the plurality of the second lid placing sections (16a-c) are configured to accommodate large lids (5a, 6a, 7a) among the lids of the plurality of liquid containers; the plurality of the first lid placing sections or the plurality of the second lid placing sections (16a-c) are respectively positioned on bilateral sides so as to sandwich the transport path therebetween at positions on the outside of the transport path, and positioned at both ends in the longitudinal direction (X direction) of the transport path, at least one of the lid placing sections (16a-c, 32-34) has a concave shape to accommodate the lid. a plurality of container setting units (13, 14, 15) for setting a plurality of liquid containers (5, 6, 7, 8) accommodating liquids, wherein each of liquid containers set in the plurality of container setting units (13, 14, 15) is set therein with a lid removed; a detecting unit configured to perform a measurement operation for a sample using the liquid; a liquid suctioning unit including a suction tube for suctioning the liquid from at least one of the plurality of liquid containers (5, 6, 7, 8); a plurality of lid placing sections (16a-c, 32-34) for placing the lid of at least one of the plurality of the liquid containers (5, 6, 7, 8), the plurality of lid placing sections (16a-c, 32-34) comprises a plurality of first lid placing sections, and a plurality of second lid placing sections (16a-c); a transporting apparatus configured to transport sample containers containing samples; and a sample suctioning unit configured to suction a sample accommodated in a sample container transported by the transporting apparatus; wherein a part of the plurality of lid placing sections is provided in the transporting apparatus, wherein the transporting apparatus comprises a transport path configured to transport the sample containers in a longitudinal direction (X direction); wherein the plurality of lid placing sections (16a-c, 32-34) are arranged in a different region from a region in which the transport path is provided, characterised in that: the plurality of container setting units are for setting a plurality of types of liquid containers (5, 6, 7, 8) accommodating liquids, the plurality of the first lid placing sections are configured to accommodate small lids among the lids of the plurality of liquid containers; the plurality of the second lid placing sections (16a-c) are configured to accommodate large lids (5a, 6a, 7a) among the lids of the plurality of liquid containers; the plurality of the first lid placing sections or the plurality of the second lid placing sections (16a-c) are respectively positioned on bilateral sides so as to sandwich the transport path therebetween at positions on the outside of the transport path, and positioned at both ends in the longitudinal direction (X direction) of the transport path, at least one of the lid placing sections (16a-c, 32-34) has a concave shape to accommodate the lid. the plurality of container setting units are for setting a plurality of types of liquid containers (5, 6, 7, 8) accommodating liquids, the plurality of the first lid placing sections are configured to accommodate small lids among the lids of the plurality of liquid containers; the plurality of the second lid placing sections (16a-c) are configured to accommodate large lids (5a, 6a, 7a) among the lids of the plurality of liquid containers; the plurality of the first lid placing sections or the plurality of the second lid placing sections (16a-c) are respectively positioned on bilateral sides so as to sandwich the transport path therebetween at positions on the outside of the transport path, and positioned at both ends in the longitudinal direction (X direction) of the transport path, at least one of the lid placing sections (16a-c, 32-34) has a concave shape to accommodate the lid.