Mode division multiplexing is becoming a potential approach to overcome the capacity crunch of a single-mode fiber transmission system. In the future mode- and wavelength-division multiplexing system, different spatial modes and the wavelength gain difference will affect the transmission capacity and speed. In this study, to realize the modal gain equalization and wavelength gain flatness, a 44.5 km few-mode fiber with ultra-low loss is pumped by the 1480 nm pump light with LP₁₁ mode,and the distributed Raman amplification through the few-mode fiber is realized. The few-mode erbium doped fiber is pumped by the residual pump light, and the lumped few-mode erbium doped fiber amplification is realized. A remotely pumped few-mode fiber amplifier is experimentally demonstrated. The average equivalent on-off gain is greater than 15 dB, and a differential modal gain approximately 2 dB in the wavelength range of 1560-1600 nm is achieved.