The present investigation entitled ‘Laboratory studies on Biology of False spider mite, Brevipalpus californicus’ was conducted in the Acarology Laboratory, Department of Entomology, Assam Agricultural University, Jorhat during the year 2015 and 2016 This false spider mite belongs to the family Tenuipalpidae has been reported to cause extensive damage to the flowering crops like gerbera. They are called false spider mite because they do not spin web unlike other spider mite. The biology study was conducted at a temperature 22.5⁰C±2⁰C and relative humidity 80±2% on Gerbera jamesonii. Four distinct life stages of B. californicus were observed which pass through larva, protonymph, deutonymph and adult. The life cycle completed in 49.5-72.5 days.