Two-µm ultrashort pulse laser with high power and tunable wavelength has been widely applied in medical surgery, atmospheric communication, photoelectric countermeasures and other fields, owning to the advantages of high peak power, narrow pulse width, tunable-wavelength, etc. We achieved a tunable Raman soliton output at 1895～2165 nm in an all-optical fiber thinning structure using a high nonlinear fiber pumped by an erbium-doped fiber amplifier with high peak power. The pulse energy of the Raman soliton was enhanced by the chirped pulse amplification technique. After amplification, a single pulse energy of 1.56 μJ, an average power of 50.6 W and a pulse width of 83 ps were achieved. After grating pair compression, a pulse width of 1.23 ps, an average power of 22 W and a peak power of 0.55 MW could be realized. The amplified pulse still has the ability of wavelength tuning. The wavelength tuning ranges of the pulse are 38 nm at average power of 5 W and 8 nm at average power of 50.6 W, respectively.