The invention discloses an indoor waterproof insulating carpet and belongs to the technical field of carpets. The indoor waterproof insulating carpet comprises a base material layer, wherein the base material layer is a non-woven cloth layer. The indoor waterproof insulating carpet also comprises a waterproof layer arranged at the upper surface of the base material layer and an elastic layer arranged at the lower surface of the base material layer; a wear-resistant reinforcing layer is arranged at the upper surface of the waterproof layer; a rubber absorbing layer is also arranged at the lower surface of the elastic layer, wherein an adhesive layer is adopted for connection between the base material layer and the elastic layer and between the elastic layer and the rubber absorbing layer, and the waterproof layer is a self-adhesive waterproof layer. The indoor waterproof insulating carpet disclosed by the invention not only has better waterproof effect, but also has the effects of excellent breathability, heat insulation and sound insulation, and provides guarantee for high-quality healthy life of people; in addition, the carpet is stable in property and convenient in cleaning and has better application value.