The invention relates to a five-level neutral point capacitance voltage control method based on amplitude shifting carrier. Includes such steps as scaling the input three-phase voltage vector to obtain equivalent three-phase modulation vectors uaub, uc and four intervals, scaling the input three-phase voltage vector to obtain equivalent three-phase modulation vectors uaub, uc and four intervals; 102, collect a five-level neutral point capacitor voltage un, and comparing that un with half of the bus voltage to obtain a variable N; 103, respectively obtain a three-phase modulation vector ua, uband uc instantaneous values Va, Between Vb and Vc and sum, Minimum lower boundary difference shown in the description and shown in the description; 104, obtaining the corrected three-phase voltage according to the variable N and the minimum difference between the upper and lower boundaries; 105, generating a three-phase PWM signal according to the corrected three-phase voltage to control the five-level inverter to keep the five-level neutral point capacitor voltage un stable; The invention has the advantages of simple space vector region division, small calculation amount, short calculation time, stable voltage control to ensure the stability of the power electronic equipment in the whole range, and strong robustness.