The amount of food waste has gradually increased and demand for good quality soil amendment is high. The aim of this study is to evaluate feasibility successive composting technique of vegetable waste (VW) for production of high-quality organic soil amendment (Section 1). also, optimum condition of acid hydrolysis for food waste reduction was assessed (Section 2). At the section 1, VW was collected and mixed with either sawdust or cocopeat at the ratio of VW 70 : Organic material 30 for composting of vegetable waste. After finishing the first composting, fresh VW was mixed with the finished compost at the ratio of compost sample 70 : fresh VW 30 to enhance nutrients content of the compost. After 4th successive composting, evaluation of composting process and quality of final product were conducted. temperature profile revealed typical composting processes, showing mesophilic, thermophilic, cooling, and mature periods. During the thermophilic period, temperature increased to a range of 54.5?74.5 ℃. Other chemical properties, i.e., pH (7.95-9.54) and OM content (46.69?59.32%), were within the ranges of those for typical composts. The nitrogen contents (1.98?3.19%) were higher than those of commercial organic soil amendment, and a maturity test showed that all the composts had matured. For the hydrolysis of food waste at the section 2, three different solvents, HCl, H2SO4, and KOH, were used and varied concentration at the range of 10-30% and hydrolysis time at the range of 1-3 hours were evaluated. As a result, generally reduction rate of food waste was increased when concentration of solvent and hydrolysis time was increased except when KOH was used. Among different solvents, concentration, and hydrolysis time, the highest reduction rate (97.79%) was observed when 30% of HCl was used with temperature of 140℃ at 2 hours of hydrolysis time. In addition, neutralization effect of alkalic materials, Oyster shell (OS) and egg shell (ES) was evaluated. Both OS and ES increased pH of finished acid hydrolysis solution up to 7.61 indicating that neutralization effect of OS and ES was sufficient for finished acid hydrolysis solution. Contents of organic matter was also at the range of 10.7-13.04% and 5.53-8.04% respectively when HCl and H2SO4 were used as solvent. In conclusion, VW could be utilized to make organic soil amendment that had a high content of nitrogen via a successive composting process and showed feasibility for making high-quality organic soil amendment. Also, hydrolysis technique can be used to manage food waste with selected optimum condition in this study and characteristics of finished hydrolysis solution after neutralization might be suitable for soil amendments.