Abstract: Electro-spark deposition process is widely applied in many fields due to its low-heat input,little distortion in base,and easy operation.At present time,a lot of investigations have been done and a lot of results obtained,but there are still a lot of to be done in the theory investigation.For this reason,the forming principle of spot and the adhesion of electrode and the interface behavior were investigated.When WC electrode was used to deposit TC1 substrate,the adhesion of electrode,which affect the transferring process,were investigated and analyzed.Adhesion,which often produces a thin layer of mixture on the surface of the WC electrode,in the adhesion layer metallurgy reaction occurs and TiC new phrase forms.