An electrosurgical unit having micro/nano structures formed thereon and the manufacturing method thereof are disclosed, in which the electrosurgical unit is formed by the projecting of a laser beam upon a blade so as to have a plurality of micro/nano elements formed on the surface of the blade. The application of the plural micro/nano elements on the surface of the blade has proven to be a valuable asset not only in providing a non-stick surface and a good heat dissipation ability, but also in providing a electrosurgical blade that will not release any toxic material under high temperature during coating.一種具有微奈米結構之電燒刀及其製造方法,該電燒刀具有一刀本體,發射一雷射光於刀本體,並由該雷射光直接於刀本體表面成型微奈米結構,該微奈米結構係由多數個微奈米微結構單元構成。藉此達到抗沾黏及熱均散效果,且可避免一般鍍膜或塗佈方式,易於高熱時釋放有毒物質。10...電燒刀11...刀本體12...刀柄13...微奈米結構