这是一个关于蒙特卡洛模拟的简要介绍，包括其主要思路和一些简单的应用实例。对于刚刚接触到这一领域的朋友会有一些帮助。-This is a Monte Carlo simulation on the brief introduction, including its main ideas and some simple application examples. Who have just come into contact with friends in this area will have some help.