The invention discloses a single-phase electric energy meter sampling circuit. An input end of a power transformer T1 is connected with a live wire through a live wire conductor; the live wire conductor is grounded; both ends of manganin R0 are in live wire connection; one end of a resistor R1 is connected with a sampling line through one end of the manganin R0, and the other end of the resistor R1 is connected with one end of a capacitor C1 and one end of a high-resistance resistor Z1; one end of the resistor R2 is connected with the other end of the manganin R0 through one sampling line; the other end of the resistor R2 is connected with one end of the capacitor C2 and one end of a high-resistance resistor Z2; the other end of the capacitor C1, the other end of the capacitor C2, the other end of the high-resistance resistor Z1 and the other end of the high-resistance resistor Z2 are all grounded; the circuit also comprises resistors R11, R12 and Rc. The sampling circuit can still sample normally under the condition that the live wire conductor is broken or one sampling line is broken, so that the repair rate is greatly reduced, and the maintenance cost is greatly reduced to a certain extent.