The invention relates to a plastic shoe board softening device, in particular to a plastic shoe board recycling and softening device, and aims at solving the technical problem of providing a plastic shoe board recycling and softening device which is thorough in softening, high in softening efficiency and capable of saving time. In order to solve the above-mentioned technical problem, the plastic shoe board recycling and softening device is provided and comprises a support frame, a first motor, a softening box, a collecting box, a mincing box, first electric heating cases, first electric heating wires, a second motor, a rotating shaft, mincing blades, a feeding hopper and the like, wherein the first motor, the softening box and the collecting box are sequentially arranged on the left portion of the support frame from top to bottom, and the mincing box is connected to the left portion of an output shaft of the first motor. According to the plastic shoe board recycling and softening device, by adopting a mode of combining mincing and softening, not only can plastic shoe boards be thoroughly softened, but also the working efficiency can be improved in the softening process.