The utility model belongs to the technical field of the lead sealing device, a cabinet door lead sealing device of metering switch cabinet is disclosed. The utility model discloses a lock shell and lock core, the lock shell is installed on the cabinet door, the lock core is installed at the lock core of lock shell downtheholely, be equipped with the through -hole under the lock shell, be equippedwith under the lock core with the lock shell under the through -hole that is linked together of through -hole, when the cabinet door under lockout condition, plumbous seal line passes the through -hole that lock shell and lock core are linked together, then with the lead sealing of lead sealing piece to prevent that metering switch cabinet door from opening. This device can realize that the switching function can realize the lead sealing function again, and rational in infrastructure, technology is retrencied.