计算多重积分是蒙特卡罗方法的重要应用领域之一。本章着重介绍计算定积分的蒙特卡罗方法的各种基本技巧，而这些技巧在粒子输运问题中也是适用的-Calculation of multiple points is an important application of the Monte Carlo method, one of the areas. This chapter focuses on calculation of definite integral of the Monte Carlo me