The disclosure of financial reports is more and more put stress nowadays. In order to decline the information asymmetry between insurance companies and the insured, Regulations Governing Public Disclosure of Information by Life Insurance Enterprises are proposed in order to protect the interests of the insured. In this study, we explore the factors affecting firm performance of Taiwan Insurance Companies by employing the information retrieved from financial statements, and reveal several important findings as shown below. We reveal that the firms with higher persistency rate of insurance policies and higher various life insurance reserves over assets would have better firm performance. Besides, we also reveal that firm performance would be enhanced if the insurance firms are able to control expanses effectively as well.