[Objective] A comparative study of the fertility changes in six different slope ecological restoration types was conducted, in order to provide theoretical basis and technical support for the ecological environment restoration in the DG hydropower project disturbed area, Tibet, China. [Methods] Field measurement and laboratory tests were conducted to analyze the fertility change characteristics and vegetation growth status in different types of slope ecological restoration. The spatio-temporal changes of soil fertility and its correlation with vegetation growth were determined by the correlation analysis method, and the main control factors of the fertility in vegetation growth were discussed as well. [Results] The fluctuation of organic matter and nitrogen elements changed greatly in the six types of slope ecological restoration, which decreased first, then increased, and decreased finally with the seasonal change, while the change of pH value, available phosphorus and available potassium were relatively small. From the comparison of different slopes, the soil fertility from high to low showed as: spoil ground > soil slope > general construction site > earth rock mixed slope > rock slope > construction hardened surface. The vegetation restoration and growth status of different slopes showed the same order as the soil nutrient content. The ammonia nitrogen, nitrate nitrogen and available phosphorus had the highest correlation with vegetation growth, followed by available potassium and organic matter, while pH value had the lowest correlation, indicating that ammonia nitrogen, nitrate nitrogen and available phosphorus had the greatest impacts on slope vegetation growth. [Conclusion] Among the fertility conditions of different slopes, the performance of spoil ground is the best, while the restoration of rock slope and construction hardened surface is the poorest, and the contents of ammonia nitrogen, nitrate nitrogen and available phosphorus in fertility are closely related to vegetation growth.