In order to provide the scientific basis for saving energy, reducing CO₂ emissions and promoting the rapid development of economy of Liaoning Province, the Gross Domestic Product (GDP) and CO₂ emissions were surveyed and the relationship between economic growth and energy utilization efficiency, energy consumption intensity was analyzed in this study. The results showed that total energy consumption in second industry was extremely high, which was 5.67-8.41 times higher than that of the third industry, and 7.2-9.0 times higher than that of the first industry. The energy consumption per unit capita of GDP was 52%-70% higher than the national average level, mainly due to concentrated high energy demanding industries, such as coat mining, dressing, electricity and supply, etc. Besides, the energy utilization efficiency of second industry was quite low, equivalent to 11.89% of the first the industry, 12.60% of the third industry. Although annual GDP growth rate was faster than the growth rate of energy consumption, which might indicate the increased energy input promoted the improvement of gross domestic product, economic growth is not completely dependent on energy consumption growth. Instead, the adjustment of industrial structure and technical innovation played a critical role on the development of economy in Liaoning. CO₂ emissions and annual change of per capita GDP presented turning point in 2001 and 2005, with the increase of per capita GDP, emissions of CO₂ appeared to fluctuate repeatedly, suggesting the relationship between environment and the economy in Liaoning is still not in the balanced and collaborative developing stage. To solve these issues, structure adjustments, technology innovation and reform were needed to improve energy utilization efficiency and improve economy.