An abnormality diagnostic system that diagnoses a condition of a machine or equipment based upon time series data generated by a sensor attached to the machine or the equipment, comprising: a first diagnostic device built in a computer on the machine side; and a second diagnostic device built in a server that communicates with the first diagnostic device, wherein: the first diagnostic device is adapted to diagnose data generated by the sensor, acquire a first diagnostic result and output the data related to the first diagnostic result together with the first diagnostic result, characterized in that the first diagnostic device is adapted to diagnose the time series data generated by the sensor, extract said times series data related to the first diagnostic result according to the first diagnostic result, and output the time series data related to the first diagnostic result together with the first diagnostic result; the second diagnostic device is adapted to receive the first diagnostic result and the time series data related to the first diagnostic result from the first diagnostic device, diagnose the time series data, acquire a second diagnostic result of said time series data, and output the second diagnostic result together with the first diagnostic result, wherein the second diagnostic device compares the second diagnostic result with the first diagnostic result and outputs a result of the comparison together with the first and second diagnostic results. a first diagnostic device built in a computer on the machine side; and a second diagnostic device built in a server that communicates with the first diagnostic device, wherein: the first diagnostic device is adapted to diagnose data generated by the sensor, acquire a first diagnostic result and output the data related to the first diagnostic result together with the first diagnostic result, characterized in that the first diagnostic device is adapted to diagnose the time series data generated by the sensor, extract said times series data related to the first diagnostic result according to the first diagnostic result, and output the time series data related to the first diagnostic result together with the first diagnostic result; the second diagnostic device is adapted to receive the first diagnostic result and the time series data related to the first diagnostic result from the first diagnostic device, diagnose the time series data, acquire a second diagnostic result of said time series data, and output the second diagnostic result together with the first diagnostic result, wherein the second diagnostic device compares the second diagnostic result with the first diagnostic result and outputs a result of the comparison together with the first and second diagnostic results. the first diagnostic device is adapted to diagnose data generated by the sensor, acquire a first diagnostic result and output the data related to the first diagnostic result together with the first diagnostic result, characterized in that the first diagnostic device is adapted to diagnose the time series data generated by the sensor, extract said times series data related to the first diagnostic result according to the first diagnostic result, and output the time series data related to the first diagnostic result together with the first diagnostic result; the second diagnostic device is adapted to receive the first diagnostic result and the time series data related to the first diagnostic result from the first diagnostic device, diagnose the time series data, acquire a second diagnostic result of said time series data, and output the second diagnostic result together with the first diagnostic result, wherein the second diagnostic device compares the second diagnostic result with the first diagnostic result and outputs a result of the comparison together with the first and second diagnostic results.