Thulium-doped　fiber　lasers　is　widely　applied　in　laser　medical,　eye-safe　radar,　nonmetal　material　processing,　and　electro-optical　countermeasure　system,　which　has　an　irreplaceable　role　compared　to　other　wavelength　fiber　lasers.　Here,　the　progress　on　high　power　ultra-short　pulse　thulium-doped　fiber　lasers　of　our　group　is　mainly　introduced,　which　includes　the　controlling　of　pulse　width　and　spectrum　shape　of　mode-locked　thulium-doped　fiber　oscillator　by　using　fiber　Bragg　grating.　High　repetition　and　high　stability　picosecond　pulsed　laser　output　at　waveband　of　2　μm　is　realized.　Using　the　picosecond　fiber　oscillator　as　a　seed　source,　we　demonstrate　a　picosecond　thulium-doped　fiber　amplifier　with　hectowatt　all-fiber　structure.　The　maximum　average　output　power　of　final　step　power　amplifier　is　120.4　W,　corresponding　to　the　pulse　duration　of　16　ps.　In　addition,　we　also　design　and　build　an　all-fiber,　all-polarization-maintaining　structure,　and　picosecond　thulium-doped　fiber　amplifier　system.　The　linear　polarization　picosecond　pulsed　laser　output　with　average　power　of　240　W　is　realized.　The　polarization　extinction　ratio　is　greater　than　15　dB,　and　the　pulse　duration　is　45　ps.　©　2017,　Chinese　Lasers　Press.　All　right　reserved.