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For the geometric parameters Qφ and qφ of Orlicz norm, we proveb*φ /b*φ-1 ≤qφ≤Qφ≤ a*φ/a*φ-1,wherea*φ=inf tφ(t)/φ(t): 0 ＜ t ≤ψ[ψ-1(1)].,b*φ = sup {tφ(t)/φ(t): 0 ＜ t ≤ψ[ψ-1(1)]}.This reset improves the traditional estimations of Chen S. T., Rao, M. M. and W