In this paper,ideally equitable indexes are established by synthetically considering three appraisable factors,i.e.water environmental ability,GDP and City population.Ideally equitable index-Pollutant Gini Coefficient is constructed by enlarging the connotation of Gini Coefficient.The value of Gini Coefficient decreases by adjusting the area pollutant emission.The initial calculation of total pollutant load allocation in Sichuan Province is finished,which will help to form the decreasing planning of load em...