The objective of the invention lies in providing a method and device for deploying indoor distributed MIMO. The method comprises the steps that a baseband processing unit selects radio frequency channels corresponding to different miniature power remote radio heads according to a preset rule, and transmits the corresponding control instructions to the miniature power remote radio heads; the miniature power remote radio heads respectively start the corresponding radio frequency channels through radio switches corresponding to radio antennas on the miniature power remote radio heads according to the control instruction, so as to deploy the indoor distributed MIMO. Compared with the prior art, the method can carry out the resource sharing in different mRRHs, achieves the MIMO and beam forming features, extends the scene of indoor MIMO deployment based on the load balance state power saving, and also can be compatible with a conventional protocol.