For the ions with a (3d)1 electron in a tetragonally or trigonally distorted cubic crystal field by taking the previous static crystal field theory as starting point, the Γ∥, Γ⊥ and K∥ K⊥, R∥ R⊥ are introduced further in terms of cluster model. E9 mixing into T29 is also considered. Then we derive the formulas of g∥ and g⊥ which can be used in all possible eases of tetragonally or trigonally distorted cubic crystal field.The variation of g∥ and g⊥ with the parameters has been discussed.A considerable peak appearing on the Δg-(d/λ0) curve has been discovered and further analysed.Bight EPE experimental results from literatures have been fitted and explained.