A printing device includes: a driving motor that applies a power rotating a roll body in which a medium is rolled; a driving roller that transfers the power of the driving motor to the roll body; a transport motor that applies a power transporting the medium; a transport roller that is provided further to the downstream side than the roll body in the transport direction of the medium; and a looseness acquiring unit that acquires an looseness between the driving roller and the transport roller. When the looseness is equal to or more than a predetermined looseness, the driving motor is controlled on the basis of the looseness acquired by the looseness acquiring unit. When the looseness is less than the predetermined looseness, the driving motor is controlled on the basis of tension between the driving roller and the transport roller.