The invention provides a face recognition toilet paper robot. The robot comprises at least one face recognition module (1), a standing recognition mark (2), at least one text language prompt module (3), at least one code scanning paid area (4), at least one paper outlet (5) and a toilet paper replacement mechanism; the face recognition modules (1) are used for identifying the facial features of people taking free toilet paper and storing the facial features in a specific database, and then people with the same facial features cannot take the free toilet paper any more within the specific time; the standing recognition mark (2) is stuck to the portion, a certain distance away from the wall surface, of the front end, and therefore a clear face recognition area is defined; the text language prompt modules (3) prompt whether face recognition succeeds or not and whether a section of toilet paper with the fixed length is provided or not; on the condition that the toilet paper is still needed within the specific time after the free toilet paper is taken, the paid toilet paper of the certain length is taken by adopting multiple payment methods; after a text or voice prompt module prompts that paper is discharged, the toilet paper of a specified length is discharged from the paper outlets (5); the toilet paper replacement mechanism is used for replacing the toilet paper according to the use condition of the toilet paper. The invention further provides a use method of the face recognition toilet paper robot.