A method for calibrating a large fixed electronic scale, said method being a verification method which applies an auxiliary verification device to calibrate said large fixed electronic scale without using a weight, wherein said verification method includes steps of: step 1: loading and unloading every supporting point on a scale table board of said scale by at least four self-locating loading and unloading mechanisms; step 2: applying at least four high accuracy load gauges to measure and display a load that each of said loading and unloading mechanisms applies to said scale table board; step 3: applying a constant load control device to control a size of said load that each of said loading and unloading mechanisms applies to said scale table board and further control a size of a load of each supporting point on said scale table board so that said load of each supporting point corresponds to a required load applied to each of said supporting points while calibrating said scale; and step 4: comparing a precise load displayed by said high accuracy load gauges with a gauge weighing display value of said scale to obtain a calibration error of said scale, wherein said step 1 includes steps of: s1: forming through orifices on said scale table board vicinity to said supporting points of said scale respectively and correspondingly disposing a ground tension collar or tension rod into a scale table foundation below each of said through orifice in advance; s2: installing a tension framework at each of said through orifices to be perpendicular to said scale table board, and penetrating said tension framework through said through orifice in step s1 for fixing said tension framework with said ground tension collar or tension rod; and s3: arranging said loading and unloading mechanism around each tension framework above said scale table board, which load and unload said scale table board by self-locating, said method being characterized in that said high accuracy load gauge includes at least three standard cells evenly disposed around said tension framework so that said at least three standard cells are applied to detect a resultant value of said load which said loading and unloading mechanism applies to load said scale table board, each standard cell is connected to a standard cell measure display device, said standard cell measure display device shows a size of said load, a detachable and adjustable limiting unit is disposed above each of said standard cells to assure that said high accuracy load gauges and said scale table board are concurrently subjected to a load with a same force when said scale table board is loaded by said loading and unloading mechanisms. step 1: loading and unloading every supporting point on a scale table board of said scale by at least four self-locating loading and unloading mechanisms; step 2: applying at least four high accuracy load gauges to measure and display a load that each of said loading and unloading mechanisms applies to said scale table board; step 3: applying a constant load control device to control a size of said load that each of said loading and unloading mechanisms applies to said scale table board and further control a size of a load of each supporting point on said scale table board so that said load of each supporting point corresponds to a required load applied to each of said supporting points while calibrating said scale; and step 4: comparing a precise load displayed by said high accuracy load gauges with a gauge weighing display value of said scale to obtain a calibration error of said scale, s1: forming through orifices on said scale table board vicinity to said supporting points of said scale respectively and correspondingly disposing a ground tension collar or tension rod into a scale table foundation below each of said through orifice in advance; s2: installing a tension framework at each of said through orifices to be perpendicular to said scale table board, and penetrating said tension framework through said through orifice in step s1 for fixing said tension framework with said ground tension collar or tension rod; and s3: arranging said loading and unloading mechanism around each tension framework above said scale table board, which load and unload said scale table board by self-locating, said method being characterized in that said high accuracy load gauge includes at least three standard cells evenly disposed around said tension framework so that said at least three standard cells are applied to detect a resultant value of said load which said loading and unloading mechanism applies to load said scale table board, each standard cell is connected to a standard cell measure display device, said standard cell measure display device shows a size of said load, a detachable and adjustable limiting unit is disposed above each of said standard cells to assure that said high accuracy load gauges and said scale table board are concurrently subjected to a load with a same force when said scale table board is loaded by said loading and unloading mechanisms.