Abstract: Quantum mechanics mainly describes the behavior of things at the micro scale. Many quantum phenomena are contrary to daily direct experience,so the basic concept of quantum mechanics is not easy to be understood by students in the course of teaching. Polarized light experiment is a common physical experiment,which is familiar to students,and the experimental phenomenon is intuitive. Focusing on the perspective of observable and measurement,this paper illustrates quantum concepts through the explanation of the phenomenon of optical polarization experiment. In this way,the abstract quantum concepts can be embodied in the analysis of the concrete experimental phenomenon,which will help students understand the basic principles of quantum mechanics.

Key words: quantum mechanics, quantum measurement, polarization