The invention discloses a solar automatic water supply flowerpot which comprises a flowerpot body, wherein the interior of the flowerpot body is divided into an electricity cavity and a water storage cavity by a partition plate; a culture bin is arranged in the flowerpot body; a filter screen is vertically arranged in the culture bin; an inner cavity of the culture bin is divided into a floating ball bin and a soil bin by the filter screen; the soil bin is filled with a soil layer; a controller, a motor and a water pump are mounted in the electricity cavity; the motor is connected with the water pump in a driving manner; the controller is connected with the motor in a control manner; the water pump is mounted on a water supply pipe; the lower end of the water supply pipe is communicated with the water storage cavity; the upper end of the water supply pipe is connected to the soil bin; a floating ball and a floating ball rod are arranged in the floating ball bin; the floating ball is mounted at the bottom end of the floating ball rod; and a control electrode mechanism is arranged in the floating ball bin. The solar automatic water supply flowerpot can realize unmanned management of potted flowers and plants, requires no frequent manual watering, and only requires regular water replenishment of a water tank, so that the workload of people is greatly reduced, and convenience is brought to the people.