The trade deficit between China and the United States triggered China-US trade negotiations in 2018. Taiwan's electronics industry is highly dependent on trade with the United States and China, and has been impacted by China-US trade negotiations. This article uses the event study method to explore the impact of the three relevant event days of the China-US trade negotiations on the stock market of the electronics industry, and selects 50 companies in the electronics industry in Taiwan to analyze their stock prices. The purpose is to study whether different negotiation dates have positive or negative abnormal returns on the abnormal returns of stock prices in the electronics industry