A pair of collapsible goggles consists of a flexible frame and an eyeglass. The flexible frame has plural engaging grooves and plural air holes formed around the edge. The eyeglass is formed curved, provided with engaging projections. A connecting arm is installed at two sides of the eyeglass respectively. In assembly, one end of the flexible frame is first fitted in the curved recessed surface of the eyeglass, with the engaging projections of the eyeglass inserted in the engaging grooves one by one to enable the flexible frame extended straight against the eyeglass. Next, the connecting arms are put at two sides of the eyeglass to engage with the positioning holes. So the collapsible goggles are easily and stably assembled together.
