The invention discloses a method and a system for data processing and equipment provided with the system. The data processing method comprises the following steps: analyzing obtained image, and extracting data and operator in the image for recognition; performing accumulation for the recognized data and operator. According to the disclosed data processing method, the data is obtained in the form of image, inputting character by character is not required, the problems of missing input and incorrect input in the prior art when accumulation of too many numbers is performed are solved, moreover, the practice of extracting the data and the operator from the recognized image and performing accumulation for the data and the operator can achieve the purpose of accumulation of sequence of long series of numbers, long series of expressions, or the mixture of the two.