Landscape water quality self-maintaining system and method

The invention relates to the technical field of water treatment, and provides a landscape water quality self-maintaining system and method.The system comprises an artificial wetland, a water distribution pipeline connected with a water distribution well and a water collecting pipeline connected with a water collecting well are arranged in the artificial wetland; the purification device is used for receiving water in the water collecting well or the water distribution well and carrying out purification treatment; the landscape water pool is higher than the water distribution well, and the purified water can overflow into the water distribution well after entering the landscape water pool; a control program is preset in the first control device to automatically control the flow direction and the flow speed of water among the water distribution well, the constructed wetland, the water collecting well and the purification device, manual intervention is not needed, the landscape pool can be in a flowing state, and