The invention discloses a parameter design method involving a resonance zero-point direct-current converter. According to the method, first, a rated input voltage, a rated output voltage and a rated switching tube control frequency of a resonance soft switching converter are determined according to an application demand; second, a fundamental wave equivalent method is utilized to perform modeling on the resonance soft switching converter, and direct-current voltage gain Mgain, resonance points fr1 and fr2 and a resonance zero point f0 of the converter are calculated; third, the number of resonance parameters needing to be optimized and possible parameter variation ranges of all the parameters are determined, and all the parameters are divided into independent parameter groups; and last, an MATLAB program is utilized to screen the parameter groups, the parameters meeting conditions are reserved and recorded, and the parameters not meeting the conditions are abandoned. Through the method, circuit parameters of the resonance soft switching direct-current converter containing the zero point can be screened and designed easily and visually, the design result has a good effect, and the performance of the converter conforms to the parameter design objective.