A multichannel high-speed FBG sensor interrogation system based on wavelength-scanning fiber laser and field programmable gate array (FPGA) is developed. The system utilizes a semiconductor optical amplifier (SOA) and a fiber Fabry–Perot tunable filter (FFP-TF) to generate a wavelength-scanning fiber laser with a sweep rate of 1 kHz. By combining the symmetric triangular waveform technique and the fast FPGA based signal processing algorithm, the FBG interrogation system realizes a demodulation speed of 2 kHz and a multiplexing performance of 16 channels simultaneously. In addition, the interrogation wavelength-range can reach 80 nm.