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Considering we deal with a lot of forms in our daily life, form-processing system has a great value in office automation. This paper focuses on processing and reconstructing the printed forms. The main problems in form processing are the broken lines and the errors in field extraction. These problems affect the result of the form processing. Some methods are introduced in this paper to improve the result of field extraction. First we use regulated morphology to solve the broken lines. Second a novel method by heuristic algorithm is used to improve the field extraction accuracy. The results indicate that these methods improve the result of form processing. The reconstruction of form image is also discussed in this paper.