The paper introduces the features of the intelligent numerical control tensioning system,researches its construction methods in the bridge prestressed construction,illustrates the controlled points for the tensioning process,and points out the tensioning technique overcomes in-fluential factors in traditional tensioning craft,eliminates the quality common diseases,and promotes the engineering quality.%论述了智能数控张拉系统的特点，对桥梁预应力施工中智能数控张拉的方法进行了研究，阐述了张拉过程中各阶段的控制要点，指出采用该张拉技术克服了传统张拉工艺人为的影响因素，消除了质量通病，提高了工程质量。
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