This paper uses the two-stage Data Envelopment Analysis (DEA), which was firstly used by Seiford and Zhu (1999), to measure the managerial performance of 24 non-life insurance companies in Taiwan. Marketability was measured in the first stage while profitability was measured in the second stage. In addition, this paper uses Tobit Regression Model to examine the factors which significantly influence on the managerial performance of non-life insurance industry. Nine variables were employed to examine the model. Finally, the entire industry can be partitioned into four clusters based on marketability and profitability of a company. Effective management strategies are developed specially to each of the four clusters of non-life insurance company. It is expected this study can provide useful information for future non-life insurance company management needs.