The invention relates to a tropical flower accurate irrigation and fertilization system. The tropical flower accurate irrigation and fertilization system comprises a sprinkling irrigation system and a control system. The sprinkling irrigation system comprises a water source, the water source is connected with a fertilizer solution preparation pipe, a fertilization pipe and a watering pipe, each of the fertilizer solution preparation pipe, the fertilization pipe and the watering pipe is provided with a master control solenoid valve, the fertilizer solution preparation pipe is connected with a fertilizer supply barrel, the fertilizer supply barrel is connected with the fertilization pipe through a proportion fertilization pump, and the fertilization pipe and the watering pipe are connected with at least one sprinkling irrigation branch pipe through a sprinkling irrigation total pipe. The control system comprises a control chip, a rainfall sensor, a temperature sensor, a pH value sensor and an EC value sensor, and the control chip is connected with the master control solenoid valve, a sprinkling irrigation solenoid valve and a booster pump. Based on various growth factors of tropical flowers, the tropical flower accurate irrigation and fertilization system monitors various parameters in real time, coordinated management of water and fertilizer is achieved, and the tropical flower accurate irrigation and fertilization system accords with the sustainable development ecological agriculture direction, and is suitable for being widely promoted and applied in the field of irrigation and fertilization of tropical flowers.