Let

*H* be a separable complex Hilbert space and

*B(H)* be the algebra of all bounded linear operators. Let

be an operator matrix, which acts on

*B*(

*H*⊕

*H*). We character the compact perturbations of single-valued extension property and Browder theorem about

*T* by

*A's* respectively, when

*B*^{k}=0(

*k*∈N and

*k*≥2),

*AB=BA.*