Abstract: In order to improve the inter-provincial horizontal reward mechanism of grassland ecology and establish a reasonable standard for grassland ecological reward, in this study, the emergy analysis method, Shannon-Weiner index and emergy ecological footprint method were used to calculate the grassland ecological service value, grassland ecological scarcity value and grassland ecological out-of-pocket value of 14 prefectural and cities in Xinjiang Uygur Autonomous Region（hereinafter referred to as Xinjiang Region）,and then calculate the grassland ecological spillover value of each perfecture and city. The grassland reward funds of 14 prefecture and cities in Xinjiang Region were redistributed according to the grassland ecological spilt value, and analyzed the spatial heterogeneity of grassland compensation fund distribution in Xinjiang Region. The results showed that the total value of grassland ecological service in the 14 prefectues and cities of Xinjiang Region in 2020 was 8.33×10²³sej. Among them, the areas with high grassland ecological service value were Bayingol Mongolian Autonnomous Perfecture, Altai Prefecture, Tacheng Prefecture and Changji City. The total value of grassland ecological scarcity was 4.17×10²³sej, among which the regions with higher value of grassland ecological scarcity were Altay Prefecture, Tacheng Region, Ili Prefecture and Bazhou, and the total value of grassland ecological self-payment was 9.19×10²²sej, among which the regions with higher value of grassland ecological self-payment were Ili Prefecture, Kashgar Prefecture and Aksu Prefecture. The ecological spil-over value of grassland in 14 cities was greater than 0, and all of them could obtain grassland subsidy funds. The size of the theoretical allocation amount was Altay Prefecture＞Bayingo Mongolian Autonomous Prefecture＞Tacheng Prefecture＞Changji City＞Ili Prefecture＞Aksu Prefecture＞Kizilsu Kirgiz Autonomous Prefecture＞Hami City＞Kashgar Prefecture＞Hotan Prefecture＞Bortala Mongolian Autonomous Prefecture＞Urumqi City＞Turpan City＞Karamay City. Taking the 247.725 billion yuan of grassland subsidy funds allocated to Xinjiang Region by the central financial transfer payment in 2020 as an example, among the 14 prefecturally distributed cities, the Altay region had the largest theoretical allocation amount of 497.838 million yuan, accounting for 20.10%; followed by Bayingol Mongolian Autonomous Perfecture, the theoretical allocation amount was 374.728 million yuan, accounting for 15.13%; the theoretical allocation amount was 337.440 million yuan, accounting for 13.62%. The theoretical allocation amount of grassland subsidy prize funds in Altay Prefecture, Tacheng Prefecture, Bayingol Mongolian Autonomous Perfecture, Aksu Prefecture and Karamay City was higher than the current standard, and these cities were mostly located in the northern Xinjiang Region. The theoretical allocation amount of grassland subsidy prize funds in Ili Prefecture, Turpan City, Hotan Prefecture, Kashger Prefecture, Changji City, Bortala Mongolian Autonomous Perfecture, Hami City, Urmqi City, Kizilsu Kirgiz Autonomous Perfecture were lower than the current standard, and these prefecture-cities were mostly located in southern Xinjiang Region. The ecological spillover value in Xinjiang Region flowed horizontally from north to south, with more ecological spillover value in the north and less ecological spillover value in the south, with significant spatial heterogeneity.Finally, the author put forward countermeasures and suggestions to firmly follow the road of ecological priority and green development, accelerate the construction of the relevant legal system of grassland reward, establish and improve the supervision mechanism of grassland reward policy implementation, and continuously improve the long-term mechanism of grassland reward policy.