The Ukrainian crisis in February 2022 is the inevitable result of the US and Russia vying for leadership in the Eurasian region in the security dilemma. The United States and Western countries adopted the largest sanctions against Russia in history，and Russia used its military strength and energy advantages to counter. In economy，the crisis in Ukraine and its spillover led to global economic chaos mainly manifested by the soaring commodity prices，inflation，economic recession，and anti globalization. The polarization of wealth distribution has intensified，with low-income groups bearing the brunt. Besides，the crisis in Ukraine has accelerated the global militarization，increased the risk of nuclear war，revived the armaments of Germany and Japan and other countries. The war situation is protracted and there is a danger of escalation. Will the US and the West reduce their support for Ukraine due to political changes in the US？Will the “North Stream” pipeline be damaged？Will the winter climate situation force Europe to restart Russian energy？Will Russia gain battlefield advantage in Ukraine？Will extreme events trigger Russia’s use of nuclear weapons occur？The above factors will be the key to determine the prospect of Ukraine’s crisis.