The decline in economic growth led to a decline in the growth rate of energy and coal demand, but the decline in coal was faster, with a slight negative growth in 2014. The reason for the decline of coal consumption from a deeper level is that with the transformation of China's economy from the stage of heavy industrialization to the later stage of industrialization and the transformation of the three industries from the structure of "secondary industry, tertiary industry, primary industry" to the structure of "tertiary industry, secondary industry, primary industry", the growth rate of domestic energy and coal demand has declined significantly, coupled with environmental pressure As a result, the total consumption of coal has declined, and the coal industry has entered a "four stage co-existence" development stage of slowing demand growth, overcapacity and inventory digestion, environmental constraints and structural adjustment. From this growth cycle of coal demand, coal demand has passed the peak and entered the declining stage. Can we think that the 4.244 billion tons of standard coal in 2013 is the peak and limit value of coal demand? In this chapter, we will use some economic theories and measurement methods to study this problem systematically. At the same time, we will analyze the main driving force of coal demand? How long will these dynamics last? How much coal can China's national economic system bear? Another important significance of studying the growth limit of coal demand is closely related to the theme of this topic - the growth limit of China's coal output. If the demand growth limit is less than the output growth limit, and the arrival time of the demand growth limit is earlier than the output growth limit, the situation of coal supply and demand is more optimistic; if the opposite, the situation is more severe. The results of this chapter will be compared with those of the next chapter.