As a new type of high-performance and low-cost metal smelting graphite material, graphite electrode nipple has a range of application prospects. However, there are many problems in the production and processing of graphite electrode nipple, which are difficult to clarify. In order to explore the processing performance of the cone of the graphite electrode nipple, the orthogonal turning experiment of the cone of the graphite electrode nipple is carried out. The experiment selects carbide tools with different tool angles for different turning parameter experiments and analyzes them. The results show that when processing the cone of the graphite electrode nipple, the cutting force shows a fluctuating state, and the cutting force increases with the increase of the tool feed rate   and back engagement  , and decreases with the increase of cutting speed  , tool rake angle   and relief angle  . In addition, since the graphite electrode nipple is a brittle material, the tool does not produce a built-up edge when the   is enlarged. Based on the minimum cutting force and surface roughness target, the best cutting parameters and tool angle obtained in this paper are the =0.5mm,  =160mm/min,  =100mm/min,  =12°,  =16°. The optimal process parameters and related conclusions obtained in this paper can provide theoretical reference for enterprises in production practice.