Due to the U.S.withdrawal from Afghanistan and the Taliban return to power,there are significant new changes in the activities of the Islamic State Khorasan in Afghanistan.These activities have been significantly intensified and spilled over to neighboring regions and countries.The activities in Central and South Asia began to target at our country more frequently,posing a serious threat to China's cooperation projects and personnel in Central and South Asia.A study of such recent activities can help us accurately grasp the new trends of the"three forces"in the northwest neighboring countries of China,and provide reference for the research of the security environment around the northwest region of our country.