Abstract: 【Objective】 To explore the slaughter performance and meat quality characteristics of Luobu sheep under natural grazing conditions. 【Methods】 Eight 12 month rams and ten 12 month ewes under grazing conditions were selected for slaughter, and then their slaughter performance and meat quality were compared and analyzed. 【Results】 The slaughter performance of Luobu sheep were: slaughter rate 47.02%, net meat rate 38.09%, carcass weight 16.09 kg, eye muscle area 0.53 cm², tail weight 0.93 kg, tube circumference 7.94 cm, ram’s all of which were significantly higher than that of ewe’s (P<0.01), body length 71.78cm, significantly higher than ewe’s (P<0.05). Meat quality: $a_{24\mathrm{h}}^{\mathrm{*}}$ was 16.34, and ewe’s were significantly higher than ram’s (P<0.01). pH_24h ,b^* _40min, and $b_{24\mathrm{h}}^{\mathrm{*}}$ were 5.79, 6.40, and 8.53, respectively, all significantly higher than rams (P<0.05). There was no significant difference in cooking loss and shear force; The protein content in the muscle was 21.70, and the ram’s was significantly higher than the ewe’s (P<0.01). The fat content was 2.29, and the ram’s was significantly lower than the ewe’s (P<0.05), with a water content of 76.38; There were 17 types of amino acids in the muscle, with total amino acid content (TAA), essential amino acid content (EAA), and non essential amino acid content (NEAA) of 19.36, 8.24, and 11.12, respectively, which were significantly higher in ram’s than in ewes (P<0.05), and EAA/NEAA of 74.08, meeting the standard for excellent meat quality; There were 33 types of fatty acids in muscle, with a total fatty acid content of 89.32 and a saturated fatty acid (SFA) content of 43.50. The content of monounsaturated fatty acids (MUFA) in ewes was significantly higher than that in rams (P<0.05), with a content of 34.71 and 11.11, respectively; The contents of mineral elements Fe, Mg, Zn, Cu, Ca and Se were 56.33, 247.14, 21.69, 1.99, 108.36, and 0.04, respectively. Among them, the Se content of ewes was significantly higher than that of rams (P<0.01), Fe was significantly higher than that of rams (P<0.05), and Zn was significantly lower than that of rams (P<0.01). 【Conclusion】 Luobu mutton is rich in nutrients such as amino acids, fatty acids, and mineral elements, which belong to excellent quality meat with a delicious taste; Rams have good slaughtering performance, while ewes have bright and glossy flesh color.