1. A method of automatic photographs stitching in a photograph capturing electronic apparatus, wherein said photograph capturing electronic apparatus has a panoramic stitching mode for stitching multiple serially and consecutively captured photographs into a panoramic photograph, said method comprising the steps of: determining whether a shutter button of said photograph capturing electronic apparatus has been pressed; capturing a first preview image on a viewfinder or display screen of said photograph capturing electronic apparatus as a first photograph for stitching, and recording all parameters of said first photograph; displaying at least one four-way guiding arrow on said viewfinder or display screen for advising user the direction to move said photograph capturing electronic apparatus for capturing a next photograph which is suitable for stitching, said next photograph having an area at a predetermined region thereof overlapped and aligned to said first photograph and reaching a predetermined proportion; comparing a next preview image on said viewfinder or display screen with said first photograph; determining whether said next preview image deviates vertically when compared to a predetermined vertical position of said next photograph; determining whether said next preview image deviates horizontally when compared to a predetermined horizontal position of said next photograph; determining whether said next preview image has an area overlapped and aligned to said predetermined region of said first photograph and reaching said predetermined proportion, if said predetermined proportion is determined to have been reached, capturing the next preview image on said viewfinder or display screen as said next photograph for stitching, and adjusting characteristics such as color and brightness of said next photograph according to said recorded parameters of said first photograph; determining whether said shutter button of said photograph capturing electronic apparatus has been released; capturing a last photograph for stitching in said panoramic stitching mode and adjusting characteristics such as color and brightness of said last photograph according to said recorded parameters of said first photograph; and stitching said multiple serially and consecutively photographs captured by said photograph capturing electronic apparatus into said panoramic photograph.