From 2000 to 2018，in the Inner Mongolia’s composition of gross regional product，the secondary industry decreased from 39.71% to 39.37%，and the tertiary industry increased from 35.26% to 50.48%；in that of income approach components of gross regional product，the compensation of employees decreased from 62.50% to 47.60%，the net taxes on production increased from 12.34% to 17.22%，and the operating surplus increased from 13.96% to 21.82%；in that of gross regional product by expenditure approach，the final consumption rate decreased from 56.56% to 52.27%，and the capital formation rate increased from 44.09% to 65.21%；in that of the income and expenditure by primary distribution，the revenue rate of government finance increased from 6.17% to 10.74%，the household income rate decreased from 51.36% to 42.58%，and the household consumption rate decreased from 39.82% to 29.29%. The regional gaps of the gross regional product，total revenue of government finance，household income and total consumption in per capita value were reduced；but that of the total expenditure of government finance in per capita value was extended. The urban-rural per capita ratio of the total household consumption was reduced；but that of the household income was extended. The ranking of the structure optimization of the economic growth：in the provincial lateral evaluation of ideal value without urban-rural and regional gap，Inner Mongolia ranked the 4th；in the provincial vertical evaluation of self-base value in 2000，2005，2010，2015 and 2017，Inner Mongolia ranked the 4th，18th，23rd，23rd and 18th respectively.