The invention provides a discrimination method and device for a dispersion edge-bottom water type gas reservoir water invasion stage. The discrimination method comprises the following steps that 1, according to dynamic and static data, qualitative analysis is performed on the dispersion edge-bottom water type gas reservoir; 2, by analyzing the relation between the daily water yield and the daily water-gas ratio of a production gas well, the relation between the accumulated water yield of the accumulated gas yield and the relation between the accumulated water-gas ratio and the accumulated produced water, on the basis of the qualitative analysis, and the quantitative recognition standard of each water invasion type is built; 3, according to the quantitative recognition standard of each water invasion type, the single well and development unit water invasion degree are discriminated respectively, and therefore the dispersion edge-bottom water type gas reservoir water invasion stage is discriminated. According to the discrimination method, the water invasion degree is effectively judged by means of the dynamic production data, operation is easy, the basis is sufficient, changes of thewater invasion strength can be dynamically shown, and therefore the efficient gas pool development and water treatment countermeasure formulation can be effectively guided.