The invention discloses an intelligent aquatic plant ecological fish tank which comprises a fish tank body, a fish tank bottom cabinet, a filter tank (or a filter bucket) and a functional appliance group. The functional appliance group comprises an automatic fish tank controller, a triple overflow pipe, a feeder, a light-emitting diode (LED) temperature displayer, an electric heating rod, an aquatic plant lighting lamp, an LED colored lamp, a bottom sand filter, a double-water level probe, a temperature probe, an air outlet pipe head, an ultraviolet sterilization lamp, a submersible pump, a submersible pump flow rate control valve, a pipeline control part, a filter drainage valve, a check valve, various pipelines, an air pump, a bubble counter, an electromagnetic valve, a pressure gauge and a carbon dioxide steel cylinder. Various electric appliances in the functional appliance group are connected with the automatic fish tank controller through power cords. The automatic fish tank controller realizes the intelligence of the fish tank through various special appliances with innovative designs in the intelligent aquatic plant ecological fish tank and various existing fish appliances on the market, so that the intelligent cost of the fish tank can be minimized, and the popularization is easy.