A method for testing an image capturing function of an electronic device includes following blocks. A test program package with an exemplar image is installed in the electronic device. The electronic device is placed on a test fixture used for limiting an image capturing position and an image capturing angle of the electronic device. The electronic device captures an image to be tested by the electronic device. The image to be tested is compared with the exemplar image to determine whether the image capturing function of the electronic device is satisfactory.