中文摘要：

基于保险公司在首次破产后仍能继续运转的情形,讨论并得到了Markov- modulated风险模型中盈余过程零点数的分布.

英文摘要：

The paper allows the surplus process still to continue if the surplus once has a negative value.The distribution of the number of zero for the surplus process in Markov-modulated risk model is obtained.