The invention discloses a device and a method for recycling a waste para-aramid spinning solution. The device comprises a waste collecting barrel used for accommodating the waste para-aramid spinningsolution, wherein the outlet end of the waste collecting barrel is connected to a melting box used for melting the waste para-aramid spinning solution, the outlet end of the melting box is connected to a heat insulation storage tank through a filter device, the outlet end of the heat insulation storage tank is connected to a rotary nozzle, a cylinder used for solidifying the waste spinning solution thrown out by the rotary nozzle into fiber is arranged on the outer side of the rotary nozzle, a collecting tank is arranged at the lower part of the cylinder, the outlet end of the collecting tankis connected to a washing machine through a conveying device, the outlet end of the washing machine is connected to drying equipment, and the outlet end of the drying equipment is connected to a finished product collecting barrel. According to the device and the method, the waste spinning solution can be recycled, resource reutilization is realized, and environmental pollution is reduced.