中文摘要：

研究了具有阻尼项的二阶线性脉冲微分系统的 Lyapunov型不等式，分类讨论了两种不同的脉冲扰动情形，并提供了实例，进而改进了相关文献的一些结果。

英文摘要：

This paper studied Lyapunov inequalities for second‐order linear impulsive differential system ,discussed two kinds of pulse perturbation ,and provided an example to verify the new results .The results presented here improve some related results .