Lightwave,　as　a　kind　of　electromagnetic　wave,　possesses　a　frequency　much　higher　than　the　response　frequency　of　the　current　photodetectors,　so　the　complex　amplitude　of　the　lightwave　cannot　be　measured　directly　due　to　the　loss　of　the　phase　information.　Some　invisible　optical　concepts　such　as　phase,　wavefront　etc.　are　difficult　to　understand　for　the　undergraduate　students.　To　make　the　wavefront　of　the　light　wave　visible,　a　digital　holographic　teaching　apparatus,　as　a　kind　of　comprehensive　experimental　platform,　is　developed　by　our　teachers　and　students　under　the　support　of　Daheng　Science　&Technology　company.　Digital　holography　(DH)　can　retrieve　the　quantitative　amplitude　and　phase　information　of　the　object　wavefront,　which　makes　the　wavefront　display　possible.　In　the　teaching　apparatus,　the　digital　hologram　is　recorded　by　the　off-axis　lensless　Fourier　transform　(LFT)　digital　holographic　system,　and　the　reconstruction　of　the　hologram　is　achieved　by　the　inverse　Fourier　Transform.　The　system　is　controlled　by　the　Labview　software.　Except　the　quantitative　amplitude　and　phase　information,　the　spectrum　of　the　hologram　in　the　spatial-frequency　domain　etc.　can　also　be　visualized　in　the　user　interface　of　the　apparatus.　This　can　help　students　intuitively　comprehend　many　optical　content　including　phase,　optical　interference,　diffraction,　optical　Fourier　transform　and　diffraction　propagation　calculation　et　al.,　which　has　the　characteristics　of　being　open,　flexible　and　systematic.　Furthermore,　the　analytical　and　manipulative　ability　of　students　can　be　effectively　advanced,　and　students　can　also　generally　understand　the　actual　demand,　work　pattern　and　product　sales　of　the　company.