面对立体几何问题,多数学生感觉畏难．究其原因,除少数缺乏空间想象力外,多数还是由于注重归类,不寻求规律所导致．若能在正常的推理前提下,潜心探索研究问题的实质、目的,那么,解决问题的方向、途径、切入口还是不难找到的．解决立体几何问题应确立的五种观念,就是从实际解题中得到的经验,现介绍给大家,交流尝试． In the face of three-dimensional geometric problems, most students feel awkward. The reason for this is that, except for a few who lack spatial imagination, most of them are still due to the categorization and failure to seek laws. If it is possible to explore the essence and purpose of the research problem under the premise of normal reasoning, then it is not difficult to find a solution to the problem. The five concepts that should be established to solve the three-dimensional geometry problem are the experience gained from the practical problem solving. Now we introduce it to you and try to communicate.