A medical observation device includes: an imaging device； a support unit that supports the image-capturing unit and includes arms and joints rotatably connecting the arms； a motor that applies power to at least one of the joints, and rotates two of the arms connected at the joint relative to each other； a gear mechanism that includes two intermeshing gears and is disposed in a power transmission path from the motor to the at least one joint； an operation receiver that receives a user operation； and a controller that performs first control for causing the motor to rotate in accordance with the user operation received by the operation receiver and performs second control after the first control is completed and rotation of the motor is stopped.
