The present disclosure envisages a system (100) for detecting variations in motor movements. The system (100) comprises a sensing module (20), an analyzer (30), a database (40), a comparator (50) and a detection module (60). The sensing module (20) is configured to periodically sense response of a test user when subjected to an external stimulation and generate a value. The analyzer (30) is configured to cooperate with the sensing module to analyze response time to generate a current analyzed test data. The comparator (40) is configured to cooperate with the analyzer and the database to generate a comparison data. The detection module (60) is configured to cooperate with the comparator (50) to detect whether the response of the motor movements of the test user is normal or abnormal based on the received comparison data.