Abstract: Reasonable productivity is an important index of condensate reservoir development, which related to the development level and the economic benefit of gas reservoir. Based on the analysis of recovery characteristic of Hongtai condensate gas reservoir, minimum removal liquid gas production, one point method, analogy and numerical simulation were used to determine reasonable productivity of condensate gas reservoir. We put forward the suitable single-point formula for Hongtai condensate gas reservoir for the first time and demonstrated that its reasonable productivity is 1.0×10⁸m³.