A method and electronic device for generating fingerprint enrollment data are provided. The method includes the steps of capturing first input data, wherein the first input data is divided into a plurality of first blocks and each of the first blocks has an index value; capturing second input data, wherein the second input data is divided into a plurality of second blocks and each of the second blocks has the index value; comparing and combining the first input data with the second input data to generate a comparison result; accumulating the index values of the first blocks and the second blocks in an area of overlapping between the first input data and second input data; and generating prompting information according to the comparison result.