A prediction model of city nature gas monthly consumption was established basing on city natural gas monthly consumption's limited growth and period of 12 months

the related parameters of different types of city of prediction model is analyzed

and example is applied.The results showed that the prediction model of city nature gas monthly consumption which was established basing on logistic and distribution curve

can be a good characterization of the growth of city gas in process characteristics and change rules; the characteristic value and its variation range of distribution curve was different from each type of city

and the width was different before and after the peak point curve.The peak and trough eigenvalue of distribution curve of natural gas monthly consumption was big difference when the city had central heating system

the peak and trough eigenvalue of distribution curve of natural gas monthly consumption was little difference when the city had non central heating system

the natural gas monthly consumption of complete production city had obvious individual characteristics.