Abstract: A method of nearly-round repeating orbit designing is proposed.It's aimed to resolve the question of orbit designing with the restriction of a specific satellite ground trace.The(relationship) between the satellite ground trace and orbit parameters is analyzed.It's concluded that the designing of the nearly-round repeating orbit with the restriction of a specific satellite ground trace relies on the determination of the semi-axis and the inclination.Non-linear equations are(constructed) with the restriction of the satellite ground trace to resolve the unknown semi-axis and inclination,but it's too complicated to be resolved directly.Therefore,an iteration algorithm is used to resolve it.A MATLAB program is built to realize the algorithm.The result is simulated by STK(Satellite Tool Kit).It shows,this algorithm works well in obtaining the designing target.