Abstract: Through the understanding of the gas field development law, combined with the gas field development circulation variation, the paper analyzes the trough and crest of numerous economic variables in gas field development. Using macroeconomic leading index, synchronous index and lag index for reference, set up the economy early warning index system of gas field development. This paper applies macroeconomic early warning method to economy early warning of gas field development. Through the set-up of economic prewarning models and the system of corresponding index, the author draws a control plot of early warning system of gas field development to prevent the gas field from excessive fluctuation in the development course and keep the relative harmony development in gas field.