The war in Ukraine, which has been going on for more than a year, provides lessons for Washington and Taipei to prepare for and respond to a possible future Chinese military attack. Effectively provide military assistance to Taiwan. Some defense experts suggested that the Biden administration should give priority to arms sales to Taiwan, and speed up the delivery of key weapons and expand sales to Taiwan through various channels such as foreign military financing, joint production of weapons by the United States and Taiwan, and stockpiling ammunition in Taiwan in advance. Taiwan arms sales scope. In addition, given the urgency and seriousness of Taiwan’s defense, investment in funding, intelligence assets, and political capital needs to be increased.