The invention discloses an indoor plant intelligent planting ecosystem based on ultrasonic liquid level sensing. The ecosystem comprises a base, a liquid storage mechanism and a fill light nozzle, andthe base comprises a lower shell and a connecting rod; a mixing box, a water pump, a controller and a storage battery are arranged in an inner cavity of the lower shell; a connecting tube is disposedon the lower shell, and is communicated with the mixing box through an electromagnetic valve, and the mixing box and the water pump are connected to each other; the liquid storage mechanism includesa plurality of fan-shaped tanks connected to the connecting rod; the fill light nozzle includes a nozzle body and a fill light lamp. The indoor plant intelligent planting ecosystem based on the ultrasonic liquid level sensing has the advantages of simple structure, convenient use, various functions and high intelligence, and effectively solves the problem that a function of traditional automatic watering equipment is single.