A method, an electronic apparatus, and a computer readable medium for determining a relative position of an apparatus, adapted for a first electronic apparatus to determine a relative position of a second electronic apparatus, are provided. In the method, a distance between the first and the second electronic apparatus is computed according to a wireless signal transmitted between the first and the second electronic apparatus. After one unit time and two unit time, distances between the first and the second electronic apparatus are computed according to the wireless signal and a displacement that the second electronic apparatus moves within each unit time is computed, respectively. Finally, a relative position of the second electronic apparatus relative to the first electronic apparatus is computed according to the distances and the displacements by using a current position of the first electronic apparatus as a reference point.