Abstract: Controlled auto-regressive moving average(CARMA) model is a kind of linear dynamic model used for descri bing the relationship between input and output in stochastic phenomenon.Takeing Shuanggou Spring Area in Daliuta Coal Field as example,spring flow rate has been predicted by using this model under both natural and dewatering conditions.And based on the above forecast result,the influence caused by dewatering on spring flow has been evaluated.