A sample processing system comprising: a transporting apparatus for transporting samples to a first loading position, a second loading position, and a third loading position; a first measurement unit capable of being set in a first setting position and a third setting position, wherein when the first measurement unit is set in the first setting position, the first measurement unit is capable of being loaded with the sample having been transported to the first loading position and processing the loaded sample, and when the first measurement unit is set in the third setting position, the first measurement unit is capable of being loaded with the sample having been transported to the third loading position and processing the loaded sample; a second measurement unit capable of being set in a second setting position, wherein when the second measurement unit is set in the second setting position, the second measurement unit is capable of being loaded with the sample having been transported to the second loading position and processing the loaded sample; and a controller including a memory under control of a processor, the memory storing instructions enabling the processor to carry out operations comprising: controlling the transporting apparatus so as to transport a sample to the first loading position when the first measurement unit is set in the first setting position; and controlling the transporting apparatus so as to transport a sample to the third loading position when the first measurement unit is set in the third setting position; wherein the first measurement unit is set in the third setting position by being moved from the first setting position in a direction away from the second setting position, and wherein the third setting position is a position for a maintenance of the second measurement unit. a transporting apparatus for transporting samples to a first loading position, a second loading position, and a third loading position; a first measurement unit capable of being set in a first setting position and a third setting position, wherein when the first measurement unit is set in the first setting position, the first measurement unit is capable of being loaded with the sample having been transported to the first loading position and processing the loaded sample, and when the first measurement unit is set in the third setting position, the first measurement unit is capable of being loaded with the sample having been transported to the third loading position and processing the loaded sample; a second measurement unit capable of being set in a second setting position, wherein when the second measurement unit is set in the second setting position, the second measurement unit is capable of being loaded with the sample having been transported to the second loading position and processing the loaded sample; and a controller including a memory under control of a processor, the memory storing instructions enabling the processor to carry out operations comprising: controlling the transporting apparatus so as to transport a sample to the first loading position when the first measurement unit is set in the first setting position; and controlling the transporting apparatus so as to transport a sample to the third loading position when the first measurement unit is set in the third setting position; controlling the transporting apparatus so as to transport a sample to the first loading position when the first measurement unit is set in the first setting position; and controlling the transporting apparatus so as to transport a sample to the third loading position when the first measurement unit is set in the third setting position; wherein the first measurement unit is set in the third setting position by being moved from the first setting position in a direction away from the second setting position, and wherein the third setting position is a position for a maintenance of the second measurement unit.