Abstract: A model for calculating the adherent dross capability of copper cooling staves was founded by ANSYS birth-death element technology based on the finite element theory. The influences of gas temperature,cooling methods,slag properties,and cast-inbrick material on the adherent dross capability were evaluated and the corresponding influence rules were acquired. The calculation results showed that the adherent dross capability of copper staves exponentially decreased with increasing gas temperature. The adjustment of cooling methods could hardly change the adherent dross capability. The promotion of slag's adherent temperature enhanced the adherent dross capability while weakened the stability of slag layer thickness. The improvement of slag's heat conductivity increased the slag layer thickness linearly. The increase of heat conductivity of cast-in-bricks could significantly thicken the slag layer of the dovetail groove area on the copper stave. According to these calculation results,several principles were proposed to ensure the copper stave working steadily.