Digital correction method for current/frequency conversion circuit

The invention discloses a digital correction method for a current/frequency conversion circuit. The digital correction method includes a first step of measuring and acquiring positive and negative scale factors and the temperature of a working environment of the current/frequency conversion circuit; a second step of determining second-order relationship of the positive and negative scale factors and the temperature of the working environment; a third step of determining secondary correction relationship of a forward channel and a reverse channel of the conversion circuit relative to the temperature of the working environment according to the second-order relationship of the positive and negative scale factors and the temperature of the working environment; and a fourth step of correcting output of the conversion circuit by the aid of the correction relationship. The digital correction method for the current/frequency conversion circuit solves problems that a hardware analog correction method for a current/frequency conversion circuit is complicated in debugging, a circuit board is overlarge in size, and correction precision is low.