The static corrosion of alkali, alkali/surfactant(AS) and alkali/surfactant/polymer(ASP) system on minerals of reservoir were carried out by detecting the content of aluminium and silicon elements on the rock surface and the concentration of Ca2+, Mg2+, Si4+, Al3+, OH-, CO32-, HCO3-and Cl- in liquid phase. The results indicated that alkali mainly corroded clay minerals instead of feldspar. The concentration of Si4+ and Al3+ increased and that of Ca2+ and Mg2+ decreased in liquid phase, while content of Si and Al of the rock surface decreased after rock specimen was soaked in the ASP solution. With the increase of alkali concentration or the ratio of liquid to solid increases or soaking time, the corrosion became serious. Surfactant and polymer could reduce the corrosion of alkali on rock minerals to some degree. At first, alkali corroded rock strongly; after 60 days, the molecules of silicic acid in liquid phase polymerized each other and dehydrated into silica scale with the help of alkali. Polymer promoted silicone body to aggregate and scale furtherly.