The invention discloses a low-temperature thermoplastic rehabilitation support. The support comprises a support body and fastening structures, the fastening structures are used for performing corresponding upper limb function operation on daily supplies, arranged on both sides of the support body and uniformly distributed from top to bottom, the support body is prepared from 80 parts of polycaprolactone serving as a thermoplastic memory material and 20 parts of polylactic acid, a double-screw extruder is adopted for extruded granulation, and then injection molding is conducted in an injectionmolding machine. On the basis of rich practical experience and professional knowledge in design and manufacturing of such products for many years and under cooperation with the application of theories, a lightweight thermoplastic memory type stereoscopic porous structure and a corresponding preparation process are expected to be created, so that the low-temperature thermoplastic rehabilitation support is lighter and higher in air permeability and strength, not only are the waste of support resources and functional decline of a patient reduced, but also the interest and willingness of the patient in using the support are increased, the patient can better use the support, and at the same time, the purpose of reducing inconvenience in life is also achieved.