In the process of smart city construction and enterprise digital transformation, the monitoring command center is the central nervous system of information processing, and the choice of its display system is directly related to decision-making efficiency and emergency response capabilities. With its unique technical advantages, LCD splicing screen has become the standard configuration for modern monitoring room construction. This article will deeply analyze the irreplaceability of LCD splicing screen in indoor monitoring scenes from three dimensions: display technology characteristics, system integration capabilities, and operation and maintenance economy.