Abstract: Black liquor solid (BLS) and wood meal (WM) were selected as raw materials. The black liquor solid base catalysts (BLSBC) and wood meal base catalysts (WMBC) were prepared by carbonization and sulfonation.The biomass carbon based solid acids were characterized by SEM, TG, FT-IR and elemental analysis.Then these two kinds of the catalysts were applied to synthesize 2-TBHQ.The results showed that the sulfonated biochar catalysts have good thermal stability below 200℃, and successfully grafted with functional group -SO3H.The increase of carbon content and the decrease exchange capacity of H+ were mainly due to the influence of the temperature, and the exchange capacity of H+ in wood meal solid acid catalyst was higher than black liquor solid acid catalyst under the same temperature.Conversion of hydroquinone decreased as the exchange capacity of H+ decrease, and the selectively of 2-TBHQ was correlated well with the synergetic effect of exchange capacity of H+ and content of hydroxyl groups.WMBC-450 exhibited better catalytic selection than commercial solid acid catalysts (amberlyst-15 and 732 ion exchange resin), and the highest selection and yield of 2-TBHQ were 83.8% and 57.6%, respectively.