A computer-based lecture recording and reproducing method includes: executing a lecture recording and reproducing pragram; recording the lecture, including: storing information from an information inputting unit and information relating to the input information in a memory, with time information and storing voice information in the memory; writing pre-stored information in a lecture file and the input information on an assigned area in the memory, with a graphic tool by using the pre-stored information and the relating information so as to be equal to a configuration displayed on a screen; and displaying the written information on the screen; and reproducing the lecture, including: storing the lecture file information and the related information in the memory; writing the lecture file information on the assigned area in the memory, with the graphic tool by using the related information; and displaying the written information on the screen and outputting the voice information.