Hexagonal boron nitride nanosheets (BNNSs) is the isoelectric analogue of graphene. Compared with graphene, BNNSs has many peculiar properties, including high temperature stability, broad bandgap, anti-oxidation ability,corrosion-resisitant and so on. These unique features lead to BNNSs having a promising application, such as semiconductor devices working at high temperature, composite material with high thermal conductivity, optical and electronic materials and so on. However, it is hard to exfoliate hexagonal boron nitrde (h-BN) by the traditonnal methods like graphite, as the bonding between neighboring boron nitrde layers is stronger than the weak Van der Waals force between grapheme layers. In this paper, the liquid phase stripping boron nitride nanotubes preparation were studied. Mainly through the comparative study, the best BN: NaF ratio was determined, and heat treatment and powder and ultrasonic assisted intercalation, can promote the stripping of h-BN. By these way, the best liquid stripping process of boron nitride was confirmed.