The present invention provides an indoor rainwater garden, comprising a water spray system, a water collection system, a plant system, a filtration system, a water replenishment system and a drive system, the water collection system is located below the plant system, and the plant system and A filtration system is arranged between the water collection systems, and the water spray system includes a nozzle, a nozzle installation pipe, a water delivery pipe, a water pump, a pressure regulating valve, a water pump well, and a water pump controller for controlling the switch of the water pump. Including water collection tray and water collection well; the plant system includes water-tolerant and shade-tolerant plants and planting layers, the filter system includes gravel layer, coarse sand layer, and two-layer net from top to bottom, and the water replenishment system includes water source and water level A controller, the drive system includes upper and lower ball grooves, a gear plate, a driving gear, a bottom plate, and a drive motor. The invention has low manufacturing and operating costs, simple use and maintenance, can create landscapes with water droplets, green grass and colorful flowers, and add cheerful indoor atmosphere.