The invention provides an automatic diagnosis operation device for passenger conveying equipment for predicting equipment aging at initial period of equipment operation at early period. The passenger conveying equipment includes a motor (7) which drives stages and handrails by a chain and a belt; a control device (4) which controls start, stop and rotation speed of the motor. The automatic diagnosis operation device includes a start instruction detection mechanism (14) which detects the condition of instruction giving; a diagnosis operation command mechanism (17), which sends instructions to the control device for state diagnosis of chain or the like, so as to execute diagnosis dedicated operation with acceleration or torque control different from the normal start; a diagnosis data measurement mechanism (18), which measures information for controlling equipment monitoring when diagnosis dedicated operation, wherein upon receiving start instruction, the automatic diagnosis operation device starts the diagnosis dedicated operation, and diagnoses the aging state according to the measured information and changing rate.