The purpose of this study is to investigate the associations among internal control weaknesses (hereafter ICWs), innovation capability, and assets impairment recognition for firms publicly listed in Taiwan from 2005 to 2018. The numbers of the ICW data are manually collected from the prospectuses of initial public offering and seasoned equity offering firms (hereafter IPO/SEO). The CPAs were required to set forth their suggestions for the improvement of the internal control system and ICWs in the prospectuses for the last three years. We employed three variables: research and development expenditures (hereafter R&D), patent numbers, and innovation efficiency to proxy for corporate innovation capability. The empirical results show that firms with more ICWs have higher amount of recognized assets impairment loss. There is a negative relationship between innovation capability and the amount of recognized assets impairment loss. However, the negative relationship will be depressed for firms with more ICWs, implying that internal control quality and innovation capability both play an important role in a firm’s assets valuation decisions.