The invention discloses a 10kV high-pressure anti-explosion metering cabinet with an instantaneous pressure-relieving function. The metering cabinet comprises a metering cabinet body and an interlayerarranged inside the metering cabinet body, wherein the interlayer divides the metering cabinet body into a metering instrument installation chamber and a mutual inductor installation chamber, a mainelectric energy meter, an auxiliary electric energy meter, a main terminal and an auxiliary terminal are installed inside the metering instrument installation chamber, a high pressure relief valve capable of relieving pressure instantaneously is installed at the bottom of the mutual inductor installation chamber, an upper cabinet door and a lower cabinet door matched with the metering instrument installation chamber and the mutual inductor installation chamber respectively are installed on the upper portion and the lower portion of the metering cabinet body respectively, and a visible window is installed on the upper cabinet door. According to the metering cabinet, since the high pressure relief valve is installed at the bottom of the mutual inductor installation chamber, a high-temperature high-pressure gas is released instantaneously at first time in case of explosion, the situation that the cabinet doors pop up and hurt people is prevented, and meanwhile the situation that explosionof the metering cabinet leads to damage to other equipment or continuous explosion is prevented.