The invention discloses a tracking glue spraying transverse indentation device. A glue spraying optical shaft (32) is mounted on a glue spraying tracking frame of a photoelectric glue spraying mechanism; a glue spraying slide block (33) is mounted on the glue spraying optical shaft; a glue spraying mounting plate (34) and a photoelectric mounting plate (35) are mounted on the glue spraying slide block; a glue spraying head is mounted on the glue spraying mounting plate; a tracking photoelectric eye is mounted on the photoelectric mounting plate; an indentation guide rail (40) is mounted on an indentation frame of a transverse indentation mechanism; a pressing wheel frame (44) is mounted on the indentation guide rail through an indentation slide block (41); the indentation slide block is connected with a transverse indentation power source (43) through an indentation synchronous transmission module; a pressing wheel slide block is mounted on the pressing wheel frame; and an indentation wheel (47) is mounted on the pressing wheel slide block through an indentation wheel shaft (46). The tracking glue spraying transverse indentation device can track to control the conveying length of non-woven fabric pieces to perform the glue spraying and transverse vein indentation work in the fixed position, so that the bonding firmness and the molding for subsequent bagging are enhanced, and the bagging stability and yield are improved.