The invention relates to a high-order harmonic generator for intelligent electric energy meter detection. The high-order harmonic generator comprises a signal generator, a transformer T1, an input-stage circuit, a capacitor C1, a capacitor C2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R411, an amplifier A6, a voltage amplifying circuit, a power amplifying circuit, a transformer T2, a transformer T3, a current transformer TA1, a voltage transformer TV1, a switch S1, a rectification feedback circuit, a comparison circuit, a photoelectric isolation unit, a triode Q1 and a voltage-stabilizing diode D1. According to the invention, required harmonic signals are generated by the signal generator, and the frequency balance amplification is carried out onthe harmonic signals. Therefore, the amplitude of each sub-harmonic amplification output is ensured to be consistent. The direct-current feedback and the alternating-current feedback are introduced through the rectification feedback circuit, so that signals can be rapidly and accurately adjusted. The high-order harmonic generator can be applied to the high-order harmonic test of an intelligent electric energy meter.