In Brillouinoptical time domain analysis (BOTDA) sensing system, spatial resolution and sensing distance are restricted by each other. So a novel hybrid pulse coding technology which combines Golay code with differential pulse-width pair (DPP) is proposed. Compared with DPP based on Golay-BOTDA, this method shows a 6 dB enhancement of signal-to-noise ratio (SNR) in theory at the same sample times, as the Golay code can improve the SNR of the system and the DPP technology can ameliorate the spatial resolution. The experimental results indicate that 1.6 m spatial resolution could be achieved at the end of the fiber with the length of 25 km by using the hybrid coding technology, while the hybrid coding technology can get 4.08 dB enhancement of SNR compared with DPP based on Golay-BOTDA.