In this study, three common organic wastes, sawdust, chicken manure and silkworm manure were selected as carbon sources and combined with lime and microbial agents for the direct vegetation technology and served to the ecological restoration in metal mine wasteland in Guangdong Province. The three carbon sources were investigated for their remediation efficacies and their impacts on soil microbial community were assessed throughout the restoration process. The results showed that after the three carbon sources restoration, the soil pH increased from 3.27 to 7.19-8.31, and the mass fractions of total organic carbon(except for the samples with half a year of sawdust restoration and one year of chicken manure restoration) and total phosphorus increased significantly, while the mass fractions of DTPA-extractable Cu, Zn, Fe and Pb decreased significantly after half a year of restoration. Among the three carbon sources, chicken manure had the most pronounced effect on enhancing soil nutrients during the initial phase, and silkworm manure had the best effect on reducing soil mass fractions of DTPA-extractable Cu, Zn, Mn, and Fe, while chicken manure exhibited the most substantial suppression of DTPA-extractable Pb. The soil microbial α diversity significantly increased under all three carbon sources after remediation. The types of carbon sources significantly affected the composition of soil microbial communities during the restoration process, and the soil microbial communities showed obvious succession trajectories with the continuous ecological restoration. The relative abundance of functional microbes such as Luteimonas, Bacillus, Devosia and Nitrolancea, increased to promote vegetation growth and nutrient accumulation. During the ecological restoration processes, the environmental factors including pH, net acid production(NAG), NAG-pH, and the mass fractions of total phosphorus, Fe, DTPA-extractable Fe and DTPA-extractable Cu were the main driving factors affecting soil microbial community composition.