The invention discloses an electronic cable clamp device and a stitching mechanism. The electronic cable clamp device comprises top stitch electronic tension devices, bottom stitch electronic tension devices, top stitch tension detection parts, bottom stitch tension detection parts, top stitch cable clamp driving parts, bottom stitch cable clamp driving parts, a debugger and a controller; the top stitch tension detection parts are used for detecting the tension of top stitches which pass through the top stitch electronic tension devices; the top stitch cable clamp driving parts are connected to top stitch rotation parts of the top stitch electronic tension devices and used for driving the top stitch rotation parts to rotate; the top stitch tension detection parts and the top stitch cable clamp driving parts are both connected to the controller; the bottom stitch tension detection parts are used for detecting the tension of bottom stitches which pass through the bottom stitch electronic tension devices; the bottom stitch cable clamp driving parts are connected to bottom stitch rotation parts of the bottom stitch electronic tension devices and used for driving the bottom stitch rotation parts to rotate; the bottom stitch tension detection parts and the bottom stitch cable clamp driving parts are both connected to the controller; the controller is further connected to the debugger. The electronic cable clamp device can rapidly adjust the tension of the whole stitch and saves time and labor.