The invention discloses a digital signal configuration method of an acquisition unit of an electronic current transformer. The method comprises the steps of measuring standard values IX of rated primary current in different positions with the to-be-configured acquisition unit of the current transformer to obtain digital values f(I)X having a functional relationship with the standard values IX, allowing the acquisition unit to output a digital signal rated value E according to a formula f(I)X*K0*KX=E, and configuring corresponding K0 and KX into the transformer as fixed parameters according to an application occasion of the current transformer, wherein K0 is a first stage configuration coefficient, KX is secondary configuration coefficients corresponding to the rated primary current in different positions, and X represents the different positions. Double configuration method can ensure high measurement precision of the rated primary current in the different positions, an electronic circuit of the acquisition unit can be replaced more conveniently on the premise of meeting the precision requirement when a problem appears, only the precision configuration coefficient K0 is required to be adjusted to be adaptive to the replaced acquisition unit, the position coefficients KX of the different positions are not required to be measured and calculated, and self-adapting calibration is achieved.