In this paper for the analytic function defined by a Laplace-Stielties tr-ansform F(s)=integral from 0 to ∞ e~(-sx)dα(x) (s=σ+it) (α(x)∈BV)We defined the P(R) order and lower P(R) order and discuss the growth ofthe analytic function.Under Some conditions,we haveL(ρ)=T L(λ)=λ_1Where (Ⅰ) P_λ~ρ=(?)(log~〔p〕M(σ,F))/(log(1/σ)) (p≥2)(?)T=(?)(log~〔p-1〕λ_n)/(log[λ_n(log A_n~*)~(-1)]),λ_1=(?)(log~〔p-1〕λ_(n-1))/(log[λ_n(log A_n)~(-1)])(Ⅱ)M(σ,F)=(?)|integral from 0 to x e~(-sy)dα(y)|,A_n~*=(?)|integral from λ_n to x e~...