A method for optimizing an area of a ternary FPRM circuit using population migration algorithm, the method including: 1) establishing an area estimation model of the ternary FPRM circuit; 2) establishing a corresponding relationship between the ternary FPRM circuit and population migration algorithm; 3) setting an attraction function for calculating the attraction of the population location in population migration algorithm; 4) setting relevant parameters of population migration algorithm; and 5) employing population migration algorithm to calculate and obtain the greatest attractive site and the greatest attraction.