The invention discloses an automatic carton sleeving device with integrated carton locating, adsorption and clamping functions. The automatic carton sleeving device comprises a carton initial locating mechanism, a vacuum adsorption mechanism, an error following mechanism, a carton clamping molding mechanism and a control mechanism, wherein the carton initial locating mechanism is mounted on an end shaft of a carton industrial robot; the error following mechanism and the carton clamping molding mechanism are mounted on the carton initial locating mechanism; the error following mechanism is mounted under the carton initial locating mechanism; the error following mechanism can move left and right under the action of external force; the carton clamping molding mechanism is mounted at the end part of one end of the carton initial locating mechanism; the carton clamping molding mechanism can move left and right as well under the action of external force; the vacuum adsorption mechanism is mounted under the error following mechanism; and the vacuum adsorption mechanism and the error following mechanism are linked under the action of external force. According to the fixture, carton locating, grabbing, molding and carton sleeving functions can be achieved.