Graphene oxide (GO) membranes have great potential in separation technology. However, their instability under aqueous environments hinders their separation performance and practical application. Herein, we present a facile and environmentally friendly method to fabricate stable GO-based membranes via the intercalation of montmorillonite (MMT) nanoplatelets. The as-prepared membranes remain stable under water (neutral, acidic, and alkaline) in a fully hydrated state and exhibit a high pure-water flux up to 139.5 L m( -2) h( -1) under 0.09MPa. Furthermore, they also show high organic molecule rejection (98.75% for Congo red, 99.44% for rhodamine B, 99.90% for crystal violet, 99.94% for methylene blue, 96.26% for phenanthracene, and 51.32% for phenol) as well as good removal rate of heavy metal ions (100% for Ag(I), 100% for Cu(II), and 27.04% for Cr(VI)). Moreover, an outstanding recycling ability of the membranes also has been obtained. These significant performances make our membranes a good candidate in water purification.