In this study , toluene and acetic acid were used as biomass tar models, and sawdust was used as the raw materials. Co-pyrolysis experiments were conducted in a first-order fixed-bed reaction system to maximize the removal of tar from sawdust. The distribution of co-pyrolysis products at diferent temperatures and the synergistic effects among the products were discussed. The results showed that compared to the pyrolysis of sawdust alone , the co-pyrolysis of sawdust with toluene and acetic acid exhibited a superior tar removal effect. Specifically , the co-pyrolysis of sawdust and toluene effectively reduced the tar yield by 81.47%. From the perspective of tar components , oxygen - containing compounds could not be effectively removed during the co-pyrolysis process , while aromatic hydrocarbons were easy to be removed by high-temperature co-pyrolysis. The synergistic effect of acetic acid co-pyrolysis was slightly weaker than that of toluene, but it still reduced the tar yield to 27%. The yield change of co-pyrolysis products affected by temperature was consistent with that of sawdust pyrolysisalone. Furthermore, the inhibitory effect of pyrolysis temperature on coke and tar was enhanced , providing a reference for tar removal and efficient conversion.