Abstract: This paper synthesizes the advantages and functions of using Matlab and Origin to realizing rapid processing and visualization of DTS field data in Offshore Natural Gas Hydrate Production Test by China in the South China Sea. Compared with the traditional two-dimensional temperature data mapping, the DTS (Distributed Fiber Optical Temperature Sensor) data visualization method used in this paper is more efficient and intuitive, and can comprehensively analyze the trend of the whole well or the local temperature with time, which is helpful to know the production in the wellbore. The situation, combined with the geothermal gradient curve, can assist in judging the decomposition and formation of hydrates near the wellbore, effectively improving the efficiency of production optimization and prediction.