The invention discloses a light-temperature dual response polymer gel. The polymer gel is composed of two components, wherein a side chain type azobenzene polymer serves as the first component, and an organic solvent serves as the second component; and the two components are prepared into the polymer gel according to a heating method. The gel has thermos-sensitivity; besides, the compounded polymer contains an azobenzene group, so that the gel has excellent photoresponse; and gel dissociation happens under ultraviolet light, and a gel structure can quickly recover under the irradiation of visible light. The polymer gel disclosed by the invention is simple in preparation process, is low in cost, requires no special equipment, can be used for preparing various organic solvent gels and various mixed organic solvent gels, and is suitable for industrial production. The prepared organic gel has excellent thermal stability and photoresponse and has considerable prospects in some fields of photosensitive photo-switches.