A transmission control method, a device and a reconfigure intelligent surface are provided. The method in the present disclosure is performed by a reconfigure intelligent surface (RIS), the RIS includes a plurality of RIS atoms and a plurality of connectors, where each of the plurality of connectors is configured to control a connection state of the plurality of RIS atoms around the connector; the method includes: determining a setting parameter of a RIS unit; determining the connection state of the plurality of RIS atoms around the connector according to the setting parameter, and determining the RIS unit according to the connection state; where at least one of the RIS atoms constitutes one RIS unit, the setting parameter includes a center distance between multiple RIS units.