The invention provides an online edge pulling device and a glass edge collecting method in an electronic glass floating process production line. The device comprises a clean chamber, an edge pulling roller way, two groups of edge pulling mechanisms, two groups of glass edge conveying mechanisms and a glass edge collecting mechanism, wherein the edge pulling roller way is arranged in the clean chamber; the two groups of edge pulling mechanisms are symmetrically distributed at the two sides of the roller way, and are respectively positioned under the edge pulling roller way; the two groups of glass edge conveying mechanisms are symmetrically distributed at the two sides of the edge pulling roller ways; the conveying direction of the glass edge conveying mechanisms is vertical to the glass conveying direction in the edge pulling roller way; the conveying starting end of each group of glass edge conveying mechanism is respectively positioned in the edge pulling mechanism position; the conveying tail end of each group of glass edge conveying mechanism is positioned outside the clean chamber; in addition, gaps through which glass edges can pass are formed in positions, corresponding to the glass edge conveying mechanisms, on the side wall of the clean chamber; the glass edge collecting mechanism is arranged at the conveying tail end of the glass edge conveying mechanism.