Abstract: Carbon nanotubes (CNTs) arouse widespread attention as a new type of adsorbent due to their outstanding adsorption ability. The adsorption capacity and reuse performance of multi-walled carbon nanotubes (MWCNTs) for gasoline, kerosene, diesel and heavy diesel were tested in this work. The effect of machinery extrusion method and incineration method on the adsorption capacity and reuse performance of MWCNTs were investigated, respectively. The results show that with the increase of repeated use, the oil adsorption abilities of MWCNTs decrease and tend to stabilize gradually. Compared to the burning method, mechanical extrusion method is easy to destroy the initial space structure of the MWCNTs, thus lowering the adsorption capability when reuse. It is found that the oil adsorption capacity of the extruded MWCNTs increases with the increase of carbon chain length of the oil; While for the incinerated MWCNTs, the oil re-adsorption capacity decreases because the space structure and adsorption site are more easily destroyed or covered during the process of incineration due to the deposition of coke on the surface of MWCNTs.