Objective/Meaning  The scale of fixed asset investment in Xinjiang has continued to expand, continuously driving the development of the national economy, and its position in the gross domestic product of Xinjiang was increasing day by day. Therefore, the further exploration of the relationship between economic development and fixed asset investment would provide reference for promoting the sustainable, stable and healthy development of Xinjiang ’s economy in the future.

  Methods/Procedures  Based on the relevant data of the fixed asset investment and economic growth in Xinjiang from 1990 to 2020, the correlation between the fixed asset investment and the regional economic development in Xinjiang was explored in depth by using the descriptive statistical analysis, cointegration test, Granger causality test, impulse response and error correction model.

  Results/Conclusions  The results showed that the investment of fixed assets was positively related to the economic prosperity of Xinjiang, so the countermeasures were put forward including controlling the investment rationally to promote the coordinated development of economy, and optimizing the investment structure to enhance the development impetus, etc.