In conventional experimental teaching college physics，the interferometers operated with two-beam interference principle were constructed based on the spatial light structure．Due to the high cost and high losses in optical power of the interferometers，it is difficult to preserve them during the college teaching process．However，the panda polarization-maintaining optical microfiber interferometers have the merits of compact size，high stability and high refractive index sensitivity of 1 631 nm/ＲIU，high temperature sensitivity of －0．99nm/℃，and high measurement accuracy，they can be more suitable for applying in college teaching．Moreover，by fabricating the optical microfiber device and performing the measuring experiments，the operational ability of students can be improved，and the students’project learning interests can also be excited．It can also lay a solid foundation for the further experimental teaching research of novel optical fiber devices and their novel sensing applications．