The utility model provides a safety warning lamp, comprising a light guide soft glue main body which has a wearing band and an electronic device placing part that are designed integrally, and which is mainly formed by a PU (Poly Urethane) material; wherein, a side surface of the light guide soft glue main body is provided with a reflecting layer; one end or two ends of the light guide soft glue main body are provided with light sources. The safety warning lamp of the utility model utilizes the plastic having special light guiding and light diffusing functions, adds a light reflecting coating on a bottom of a plastic armband, and uses high-brightness LEDs (Light Emitting Diode) as the light sources at the two ends of the light guide glue, so as to provide multi-side and multi-angle visibility. Therefore, compared with the existing correlated and similar products, the safety warning lamp of the utility model has the advantages of extremely high brightness, and wider visibility.