The invention relates to a semi-liquid metal electrode energy storage battery, belonging to the field of an energy storage battery, and aiming at solving the problems that the all-liquid metal battery is narrow in battery material selection range and high in running temperature, and has potential safety problem. The semi-liquid metal electrode energy storage battery comprises a shell, a positive pole, electrolyte, a negative pole and a collector, wherein the positive pole is alloy made from one or more of Sn, Sb, Pb, Bi and Te; the negative pole is alloy made from one or more of Li, Na, Mg and Ca; and the electrolyte is a mixture of inorganic salt mixture and ceramic powder. When the semi-liquid metal electrode energy storage battery runs, the positive pole is in a semi-liquid state structure with alloy solid phase distributed in liquid phase, and the electrolyte is melted into semi-liquid state paste, so that the short circuit of the positive pole and the negative pole can be effectively prevented, the energy storage cost is lowered, the working temperature of the battery is reduced, the corrosion speed of the shell is slowed down, the service life of the battery is prolonged, the safety and the reliability of running can be improved, and the semi-liquid metal electrode energy storage battery is suitable for storing energy for new energy power generation grid-connection, frequency modulation and peak-load regulation of an electrical power system as well as smart power grid construction.