The invention discloses a method for qualifying liquid loading of a gas well for use in the development process of gas reservoirs and condensate gas reservoirs. Corresponding oil-water ratios at different time are calculated with daily production data of the gas well in order to obtain corresponding critical pressure gradients, and the critical pressure gradients are compared with a pressure gradient test curve for analysis. If the maximum value of the test pressure gradient curve surpasses the critical pressure gradient value, liquid loading in a shaft occurs; on the contrary, if the maximum pressure gradient value is lower than critical pressure gradient values, liquid loading does not exist in the shaft even the pressure gradient curve fluctuates. Critical pressure gradients under different oil-water ratio conditions are calculated through a substance balance state equation model and a critical pressure gradient model by using daily test data of the gas reservoirs and condensate gas reservoirs, and the critical pressure gradients are compared with the pressure gradient curve to judge whether liquid loading occurs in the shaft or not, so that various errors caused by direct manual qualitative analysis are avoided, and the accuracy of liquid loading judgment is increased.