The invention discloses a system and a method for processing digital signals in a distribution type, which respectively processes different parts of the digital signal source by different processing equipment and sends the processed information to corresponding display units for displaying; images displayed on all display units are spliced as a whole display picture. As each processing equipment respectively processes a part of the signal source data only, each part is displayed by different display unit and the whole display picture with high resolution is spliced, therefore, the whole processing capability of the system is reinforced; furthermore, the requirement of high-resolution display environment is met and the display quality of high-resolution display environment is improved.