A specimen processing device comprising: a specimen processing unit for processing specimens; a first conveyance mechanism for conveying specimens from a carry-in side towards a carry-out side on the opposite side of the carry-in side with respect to the specimen processing unit through a specimen supply position for supplying specimens to the specimen processing unit; a second conveyance mechanism for conveying specimens from the carry-in side towards the carry-out side without passing the specimen supply position; a first control device for controlling the first conveyance mechanism; and a second control device for controlling the second conveyance mechanism, is disclosed. A specimen conveyance device and a specimen conveyance method are also disclosed.
