Provided is a cuvette supply device with which it is possible to smoothly supply a cuvette. This cuvette supply device comprises: a first retention part that retains cuvettes inserted from an insertion opening; a second retention part provided below the first retention part, the second retention part retaining cuvettes that are dropped from the first retention part through an opening part; a pushing part provided to the second retention part, the pushing part pushing the cuvettes to the outside one at a time; and a discharge member that causes cuvettes retained by the first retention part to drop from the opening part to the second retention part. The discharge member has: a rotating rod that is rotationally driven; and a helical blade that is provided to the periphery of the rotating rod and that has formed in an upper surface thereof a cuvette transport slope surface, the helical blade being arranged in the opening part. While the rotating rod is rotationally driven, a cuvette placed on the transport slope surface is transported downward and is caused to drop from the opening part to the second retention part.
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