Synchronous communication method and system based on multiple SPIs

The invention discloses a synchronous communication method and system based on multiple SPIs, and the method comprises the steps: enabling a central processing unit to respond to a first sending instruction, distributing a group of continuous first target data to at least two first serial peripheral interfaces, and obtaining at least two groups of first sub-data; the central processing unit sends the at least two groups of first sub-data to an editable logic device through the at least two first serial peripheral interfaces; and the editable logic device receives the at least two groups of first sub-data through a second serial peripheral interface, and performs data recombination on the at least two groups of first sub-data to obtain the first target data. According to the invention, the standard protocol of the serial peripheral interface on the central processing unit does not need to be modified, the physical limitation of the clock rate of a single serial peripheral interface is effectively avoided, mean