Fiber coupled system based on mini-bar is an effective way for avoiding complex beam shaping to reduce the costs and improve brightness. A beam shaping method named polarization folding is designed to reduce BPP of slow axis to a half,and the fiber coupling scheme based on polarization folding is also given. A microchannel heatsink is designed for the special demand of mini-bar package,and it had been proved according to the result of packaging experiment. 439 W output power of mini-bar spatial coupling module and 97% spatial coupling efficiency are achieved by spatial coupling of two 5 mini-bar stacks. A peak power of 186.9 W is achieved in the fiber coupling experiment,the O-O efficiency is about 52.2%.