The experimental dc magnetic susceptibility of pyrochlore Tb2
2O7 between 1.8 K and 300 K are analyzed within the frame work of appropriate crystal-field theory and a mean field approximation by introducing effective anisotropic molecular field tensors, and formulating an exact relation between single-ion susceptibility
tensors and site susceptibility
tensors. The susceptibility is found to be highly anisotropic along local <111> symmetry axis of tetrahedra unit with the anisotropic values of exchange interactions among Tb-spins, λ∥ = −0.085 T/μB and λ⊥ = −0.074 T/μB.