The utility model discloses an intelligent floating breeding greenhouse for flue-cured tobacco. The greenhouse comprises a greenhouse body and is characterized in that a protection device is arranged on the upper part of the greenhouse body; a greenhouse film mechanism is arranged on the upper part of the inner side of the greenhouse body; a floating breeding device is arranged on the bottom of the greenhouse body below the greenhouse film mechanism; a control device is arranged on the outer side of the greenhouse body, and the control device comprises a control box and a temperature sensor, a humidity sensor and a light sensor which are arranged in the greenhouse body; the floating breeding device comprises a water inlet pipe arranged at the bottom of the greenhouse body, a plurality of breeding grooves are communicated with the upper part of the water inlet pipe, a water temperature sensor and a liquid level sensor are arranged in each floating breeding groove, and the water temperature sensors and the liquid level sensors are electrically connected with the control box. By adopting the greenhouse, floating breeding is realized, the influence on the environment is reduced, the automation degree is high, the real-time monitoring and self adjusting are realized, the strong seedling rate of tobacco seedlings is improved, the investment is relatively small, and the construction cost and the management cost are obviously lowered.