The invention provides a thermal insulation airbag applicable to a van vehicle, belongs to the technical field of machinery and solves the problem that the thermal insulation effect of the existing thermal insulation airbag is poor. The thermal insulation airbag applicable to the van vehicle comprises a body with a closed inflation cavity, and an air nozzle communicated with the inflation cavity is arranged on the body. The thermal insulation airbag applicable to the van vehicle is characterized in that the body is in the shape of a rectangular plate under the condition of being inflated; a plurality of flexible parts of which the lengths are approximately equal are arranged in the inflation cavity; the plurality of flexible parts are mutually parallel; two ends of the flexible parts are fixed to the front side face and the rear side face of the body. The thermal insulation airbag applicable to the van vehicle has advantages of good thermal insulation and heat preservation effects.