Disclosed are a control system and method for data transmission, and a chip array and a display. The control system for data transmission comprises: a chip array, comprising a plurality of rows of chip assemblies, wherein any row of chip assembly includes at least two chip sets, all chips in each chip set are cascaded with each other; and a controller, configured to receive display data, and generate, according to the display data, a plurality of sets of display signals corresponding to the plurality of rows of chip assemblies, wherein any set of display signal is divided into at least two sub-display signals corresponding to the at least two chip sets, any sub-display signal accesses to a signal input end of a first chip in a corresponding chip set. The control system and method for data transmission, and a chip array and a display solve the technical problem in the related art that electromagnetic radiation increases when a data transmission range is enlarged.