Attention has been focused on combining two types of dental impression materials of different qualities which has not been considered in conventional combined impression, and a dental impression film and a method of manufacturing the dental impression film are provided for making the two parts joinable. The dental impression film is formed of a polyethylene film and polyethylene/polyester films. The polyethylene film has, laminated by thermal adhesion on opposite surfaces thereof, respectively, the polyethylene/polyester films having bonding capability between a silicone impression material and an alginate impression material. The dental impression film having bonding capability is interposed between the silicone impression material and alginate impression material. This enables joining of the silicone impression material and alginate impression material, no longer requires the timing of hardening of the impression materials to be matched, and allows a precise impression at low cost using a small amount of silicone impression material.