Abstract: Solid state physics is an important course for undergraduate students of physics，and its contents are

closely related to the research frontiers of condensed matter physics. Introducing appropriate latest progress in the

teaching can expand students’scientific level and encourage them to pursue further studies and researches. In this

paper，domain-wall resistance in ferromagnetic metals in the chapter of magnetism in solid states is taken as a typical

example and a guidance for students is provided to analyze the spin dependent transport in magnetic domain

walls. In this process， the students need to integrate the knowledge they have learned including the energy band theory，

perturbation theory and transport phenomena in quantum mechanics and solid state physics. By systematically illustrating

this typical example， the integration of the cutting-edge research of spintronics into teaching solid state

physics is demonstrated which would be a useful reference for creating a high -level， innovative and challenging

course of solid state physics.

Key words: solid state physics, magnetism, spin-dependent transport, magnetic domain wall