An electric cutting device includes: a pair of cutting blades clamping and cutting an object; an electric motor generating a driving force for operating the cutting blades; a control unit controlling the electric motor; an operation unit switched between an ON state and an OFF state by a user operation; and a determination unit. After the operation unit enters into the ON state and the pair of cutting blades start operating in a closing direction, the control unit is configured to: open the pair of cutting blades when the cutting of the object is completed while the operation unit is kept in the ON state; and stop closing the pair of cutting blades when the operation unit changes from the ON state to the OFF state at a timing before the cutting of the object is completed.