The invention discloses an angle-steel grouping, collecting and stacking device capable of conveniently achieving automatic control. The angle-steel grouping, collecting and stacking device comprises a machine frame, a first conveying support, a second conveying support and a third conveying support are arranged on the machine frame, the front end of the second conveying support is hinged to the machine frame, the first conveying support is provided with a set of first conveying chains, the second conveying support is provided with a set of second conveying chains, and the third conveying support is provided with a set of third conveying chains; the second conveying chains are arranged beside the output sections of the first conveying chains in parallel in a spaced mode; all the conveying chains have the same moving direction, and angle steel on the first conveying chains can be transferred to the second conveying chains and the third conveying chains in sequence; two first lifting stop hooks which can conduct front and back grouping on the angle steel are arranged on the first conveying support, a lifting mechanism which can jack up the rear end of the second conveying support is arranged at the rear end of the second conveying support, and two second lifting stop hooks which can stop and stack the angle steel are arranged on the third conveying support.