The time attendance system by human face recognition method automatically extracts the features of the human face through images obtained from the camera (webcam) and identifies the object's identity based on the data set. previously trained. “Research on facial recognition techniques to support timekeeping” specifically is the time attendance system implementing facial recognition at the Department of Education and Training of Kien Giang province. The objective is to research a facial recognition solution by deep learning method using MTCNN, Arcface and Learning Similarity to serve the detection of identification of civil servants entering/exiting the Department through cameras (webcams) at the Department. to track the working time of civil servants and public employees.