A plug device, for engaging a first connector with a second connector or disengaging the first connector from the second connector, includes a base, an operation platform, a sliding member, and an operation assembly. The operation platform is secured to the base. The operation platform is used for securing the second connector and support the first connector. The sliding member is used for grasping the first connector. The operation assembly includes a handle. The handle is rotatable relative to the base to slide the sliding member relative to the operation platform, so that the first connector is engaged with the second connector or disengaged from the second connector.