Abstract: Abstract: Sample’s moisture content and granularity would have an important influence on NIR veracity. Pre-process methods have been used to NIR analysis to achieve better NIR veracity. With Yunnan flue-cured tobacco as study materials, we innovatively applied microwave fast dry technology and home pulverizer to tobacco’s pre-process which could finish the pre-process in 5 mins，faster than the traditional methods such as oven dryness and sift out. Results showed that: microwave fast dry technology could improve NIR analysis’s veracity when samples’ moisture content had a wide range; influence of samples’ granularity on NIR veracity could be eliminated after 25 secs home pulverizer shatter. This study can offer a new NIR pre-process method for NIR analysis workers to simplify NIR pre-process.