We　demonstrated　a　harmonic　mode-locked　Erbium-doped　fiber　laser　based　on　a　saturable　absorber　(SA)　of　2H-MoTe2,　which　is　a　member　of　the　transition　metal　dichalcogenides.　The　SA　mode-locker　was　made　by　integrating　the　2H-MoTe2　into　a　D-shaped　fiber,　and　then　was　inserted　into　an　erbium-doped　fiber　laser　for　mode-locking.　The　nonlinear　modulation　depth　and　saturation　power　of　2H-MoTe2-based　SA　were　10.9%　and　19　MW　cm(-2),　respectively.　The　fundamentally　mode-locked　pulse　train　had　a　pulse　width　of　577　fs　and　a　repetition　rate　of　14.32　MHz.　The　highest　order　of　harmonic　mode　locking　was　55th,　which　had　the　repetition　rate　of　787.6　MHz,　pulse　width　of　820　fs　and　average　output　power　of　11.8　mW.　To　the　best　of　our　knowledge,　this　is　the　highest　operating　repetition　frequency　that　has　ever　been　demonstrated　in　a　2H-MoTe2-based　fiber　laser.　The　experimental　results　validate　the　feasibility　of　2H-MoTe2　as　a　promising　SA　for　generating　ultrashort　pulses　with　high　repetition　rates.