The invention relates to the field of indoor warning, in particular to a door stopper warning device. The door stopper warning device comprises a door stopper seat and a warner, wherein an inclined slope is arranged at the front side of the door stopper seat, a connecting part is arranged at the rear part of the door stopper seat and rotationally provided with the warner, the warnere comprises a casing, a circuit board, a battery, a loudspeaker, a motion switch and a power switch are arranged in the casing, an alarm circuit and a receiving circuit are arranged on the circuit board, the loudspeaker is connected with the alarm circuit, the alarm circuit and the receiving circuit are connected with the battery through the power switch, and the warner rotates to trigger the motion switch so asto realize the warning effect. The door stopper warning device has beneficial effects as follows: the structure is novel, the design is ingenious and simple, the door stopper seat effectively prevents the door from being opened easily from the outside, the alarm warning can be triggered by door opening, people inside can have time for the emergency situation, and the device plays a role of safety.