This study explore whether credit card issuing volume would affect firm performance by employing the data over the period 2008-2017 disclosed by Financial Supervisory Commission as the samples, and then reveal the following importing findings. First, the firms with high credit card issuance volume would have better firm performance, indicating that increasing credit card issuance volume would enhance firm value. Second, the firms with high non-performing loans ratio in terms of credit card would weaken firm performance, implying that the firms should evaluate the quality of credit card applicants instead of increasing the issuance volume of credit cards. Third, this study reveals that director pledge ratio in not negatively related to firm performance, which might result from that some financial institutions with higher directors pledge ratio still have superior performance. This revealed result seems somewhat different from the results shown in the relevant literature.