This paper investigates the financial reports of TSMC and FOXCONN, studying the effect of capital-expenditure investment before pandemic on post-pandemic economy. This paper claims long-term capital expenditure investment has a significant impact, especially on the period of COVID-19. Due to the reason of the increase of capital expenditure before pandemic of COVID-19 (Real estate and long-term investment increase year by year), we can infer it will increase the ROE and stock price. The capital investment of TSMC before pandemic should be the main support power of higher stock price. On the contrast, the FOXCONN have a significant decline the capital investment before pandemic (Real estates and long-term investment decrease year by year), we can infer it will not significantly increase the ROE and stock price. The lower capital investment of FOXCONN before pandemic cannot support stock price to increase.