The invention provides a garden simulation ecological tree with an air purifying function. The garden simulation ecological tree comprises an atomizing nozzle, a movable ring, a protective film, a fixed hook, a drain bar, a drain pipe, a water valve, a water pipe and a fire extinguisher. The interior of a tree body is provided with a storage cavity and further provided with a first pipe and a second pipe. A power cord is mutually connected with an external power supply circuit, installed in the second pipe and mutually and electrically connected with a photoswitch. Birds are led to a garden tonest and breed advantageously, so that ecology of the interior of the garden is more diverse, the existence of the birds can prevent and control pests inside the garden, the situation that the pestseat trees, and thus the trees are damaged is avoided, the function of biological prevention and control is achieved, and using of pesticides is reduced; and the atomizing nozzle is matched to be used,so that water flow can be atomized, the water flow is jetted to air, harmful particles in the air are cleaned up, and thus the air is flesher, and health of people is ensured.