Fi[z_, z\[Conjugate] _] =
I^n Fi0 \[CurlyEpsilon]n BesselJ[n, k1 W[z]][W[z]/Norm[W[z]]]^n +
An HankelH1[n, k1 W[z]][W[z]/Norm[W[z]]]^n
Dfi[z_, z\[Conjugate] _] = Bn HankelH1[n, k3 W[z]][W[z]/Norm[W[z]]]^n
\[Sigma]rr[z_, z\[Conjugate] _] +
I*\[Sigma]r\[Theta][z_, z\[Conjugate] _] = -(\[Lambda] + \[Micro])*
k1^2*Fi[z_, z\[Conjugate] _] +
4*\[Micro] (z\[Conjugate])^2/\[Rho]^2*1/
W'[z]*(\[PartialD]/\[PartialD]z\[Conjugate])[
1/Norm[W'[z]]*(\[PartialD]/(\[PartialD]z\[Conjugate] _))[
Fi[z_, z\[Conjugate] _] - I*Dfi[z_, z\[Conjugate] _]]]

因为你的z*_没有被当成自变量识别, 换个字母并且不加上标试试

已解决谢谢大家