The invention provides a rotational irrigation system for plants according to the environmental parameters. The rotational irrigation system comprises an irrigation water pump, a valve, a perceiving device, a processing chip and a memory. The output end of the perceiving device is connected with the input end of the processing chip, the output end of the processing chip is connected with the irrigation water pump, the memory is connected with the processing chip, and the output end of the irrigation water pump is connected with the input end of the valve. A plant rotational irrigation device is automatically controlled according to the environmental parameters, and according to the irrigation condition of first land, the irrigation tactics of following other land can be automatically designated. The acquisition cost of the environmental perceiving device is reduced, and the irrigation accuracy is considered at the same time. By means of the rotational irrigation system, manual intervention in the rotational irrigation process is reduced, labor cost and device cost are reduced, and losses caused by labor errors are avoided.