概率论是研究自然界中大量随机现象的规律性的科学,作为现代数学的一个分支,跟其它内容相比,在研究方法上存在许多独特之处.学生初学概率,常常感到不适应,在解决有关问题时,常会出现这样那样的错误.在概率的教学中,帮助学生弄清概率解题中导致错误的原因,提高概率解题的准确性,是值得注意的一个重要问题.那么,求解概率问题的主要错误有哪些?怎样才能有效地避免这些错误呢?本文就此作一些探讨,不当之处敬请批评指正. Probability theory is a science that studies the regularity of a large number of random phenomena in nature. As a branch of modern mathematics, compared with other contents, there are many uniqueities in research methods. Students often fail to meet the initial probability, In the teaching of probability, it is worth noting that to help students to understand the cause of the error in the probability problem solving and improve the accuracy of the probability problem solving, so it is worth noting that to solve the probability problem What are the main mistakes? How can we effectively avoid these mistakes? This article to make some discussion, please correct me wrong.