This paper mainly describes data transfer for Digital Spinner Magnetometer DSM2 which is a product of Schonstedt Instrument Company of the United States with a computer and software running in the environment of the Windows system. Description is also made concerning the related technical theories and train of thought such as paleomagnetic geophysics, intensity of magnetization, dip angle and angle of declination. An analysis is made concerning the instrumental construction in DSM2 and the principle for connecting it with the RS232 of the  computer. The software development process and the detailed contents are also discussed.