Abstract: In response to the issue of arrangement spacing of oblique single-axis chasing collectors,this paper conducts a detailed study on the influence of transverse and longitudinal spacing of collectors on solar energy reception and cost. With the goal of maximizing solar energy reception per unit cost,an economical optimization method for the arrangement spacing of oblique single-axis chasing collectors is proposed,which can make full use of the receiving area without increasing the cost. This method considers the influence of latitude and site fee,and is applicable to different latitudes and site fee areas. In addition,taking a heat collection field in Haikou area as an example,the optimization effect is examined. The results show that the method can more fully utilize the reception area without increasing costs and is applicable to different latitudes and site fee areas.