Turkey's controversial referendum showed that Turkish regime would changed to presidentialism，leading to a lot of criticism.In the context of AKP's dominance，this paper，based on the new constitution of Turkey，assesses and the Turkish president's power using the quantitative methods put forward by Shugart，which were revised.In addition，it is compared with other typical presidential systems’ presidents such as United States，Russia，France and South Korea.The results show that the Turkish president enjoys extensive legislative power and non-legislative power，which is similar to the Russian hyper-presidentialism.Besides，the new constitution lacks effective checks and balances for the president，overshadowing democracy consolidation.