<p>Natural gas hydrate is a clathrate compound that remains stable under high pressure and low temperature conditions. As a clean and efficient alternative energy resource, the research on extraction technology is of great significance to the optimization of global energy structure. This paper focuses on the depressurization decomposition process of natural gas hydrate (methane hydrate CH₄⋅nH₂O), constructing mathematical models for the coupling problems in the decomposition process, including multi-component, multiphase flow, seepage, heat and mass transfer, and phase change. The decomposition process of hydrate was numerically simulated by using finite difference method and calculated by MATLAB programming. This paper calculated the hydrate decomposition experiment of single and double outlets respectively, trying to analyze the single well and multi-well depressurization production process. The numerical results for double outlet reveal that this method can significantly enhanced decomposition efficiency, reducing the complete gas production time by approximately 28%. The numerical results were compared with the experimental data, showing good agreement in cumulative gas production for the single outlet case. The research provides reliable validation data and has significant engineering application value for optimizing hydrate development strategies.</p>