The utility model discloses a simple indoor asphalt foaming test device. The device comprises a test bed, the test bed comprises a base, a vertical rod is vertically arranged on the base, a horizontalrod is slidably arranged on the vertical rod, a positioning knob is arranged on the horizontal rod, a fixing clamp is arranged at the end, away from the vertical rod, of the horizontal rod, a showerhead is clamped in the fixing clamp, and a water container is connected to the upper end of the shower head; a controllable heater is arranged on the base and located under the shower head, a flat tray is arranged on the controllable heater, and the diameter of the flat tray is larger than or equal to that of the shower head. According to the foamed asphalt foaming device, asphalt is in full contact with water in the foaming process, the requirement that a small amount of foamed asphalt can be prepared in a laboratory can be met, energy consumption and waste discharge are reduced, material waste is avoided, and the foaming uniformity and the foaming effect of the foamed asphalt are improved.