The invention relates to a lithium-sulfur battery with self-temperature-regulating function. The lithium-sulfur battery comprises a positive electrode, a separation membrane and a negative electrode,wherein the positive electrode, the separation membrane and the negative electrode are sequentially arranged, and the separation membrane surface close to the positive electrode side is coated with aphase change constant temperature material layer so as to form the separation membrane capable of achieving the self-temperature-regulating function of the battery. According to the present invention,the battery is subjected to temperature control with the temperature regulating separation membrane, such that the safety and the service life of the lithium-sulfur battery are improved, the temperature range of the battery application environment is expanded, and the good application prospect is provided.