A weighing control device for an electronic belt scale comprises four weighing sensors (1), a suspended weighing loader (6), a displacement sensor (5) and an accumulator (4). The four weighing sensors(1) are respectively connected with the accumulator (4) which obtains a group of main accumulation values and two groups of auxiliary accumulation values based on the outputs of the four weighing sensors (1). The two groups of auxiliary accumulation values are compared with each other. If the difference between the two groups of auxiliary accumulation values is within the setting range, the main accumulation value is displayed. If the difference between the two groups of auxiliary accumulation values is beyond the setting range, the weighing sensor (1) in which a fault occurs is identified and the normal auxiliary accumulation value is displayed. A weighing control method for an electronic belt scale is also provided.