In china the techno-economic analysis considers the costs associated with gasifying six types of crop straws, the Fischer-Tropsch (FT) synthesis process, and the required infrastructure and operations, evaluating these costs in terms of capital expenditure (CapEx) and operational expenditure (OpEx). The study demonstrates the economic viability of producing sustainable aviation fuel (SAF) from crop straws through the gasification-FT pathway, especially given China's abundant agricultural biomass resources in 2024. Corn straw, in particular, shows significant promise, supporting the potential for large-scale SAF applications in the future .