The invention relates to an office coil pressing machine, specifically relates to a push ring device and a coil pressing machine and aims at overcoming defects in prior art. The coil pressing machine comprises a machine casing, the push ring device, a power device, a transmission device and a binding device are arranged in the machine casing, the power device is set to be a motor, the transmission device transmits power of the power device to the push ring device and the binding device, the push ring device comprises a push ring transmission mechanism and a push ring mechanism, the push ring transmission mechanism is connected with the transmission device, the transmission device comprises a transmission shaft, the push ring mechanism comprises a push board, a coil positioning mechanism is arranged in front of the push board, a whole plate coil can be inserted into the coil positioning mechanism, space for a coil to penetrate through is arranged below the coil positioning mechanism, and a coil hook is arranged in front of a limiting board. According to the push ring device and the coil pressing machine, the plug-in plate type coils can be directly used for binding, the coil pressing machine is simple in structure and can directly use plug-in plate type coils in any model, and the coil pressing machine can be widely used in the filed of coil pressing machines.