High temperature agents, which will be used in Jinglou Block 3, Hanan Oilfield for profile modification, were evaluated by means of laboratory experiments. Static evaluation included measurements of surface tension at room temperature and measurements of foam ability at different temperatures, and oil sensitivity experiment. Dynamic evaluation included the effects of temperature, concentration, nitrogen-liquid ratio and permeability on foaming sealing ability. The results showed that foaming agent No.5 had stronger foam ability and better resistance to oil than other 4 types foaming agents. Based on the results of static evaluation and dynamic evaluation, it is highly recommended to use foaming agent No.5 with the foaming agent mass concentration 5 kg/m3～6kg/m3 and the nitrogen-liquid ratio about 1:1. The results of this paper have guidance to use nitrogen-foaming profile control technology successfully in Jinglou Block 3.