The invention discloses a cultivation house capable of realizing water circulation by rotating a partition plate and driving the partition plate to scrape off dirt on the wall of a water tank. The cultivation house comprises a sealed breeding house, a cover, a grid house, a water tank, and a rotary handle. The sealed breeding house is communicated with the grid house. One side, which is far away from the sealed breeding house, of the grid house is provided with a water tank. The rotary handle is mechanically connected to the water tank. By rotating the rotary handle, a central shaft drives a drum and a partition plate to rotate in a counter-clockwise direction; thus a scraper has a downward force, the scraper moves downwards along a fixed path and scrape off the water scale; the characteristic of a spring is utilized, when the scraper and the partition plate are separated, the scraper moves upwards, water scale on a fixed tank is scraped off; the water scale is moved into a No.1 recovery cavity and is discharged from a No.1 discharge pipe; when the partition plate and the scraper are stuck together again, a No.1 spring pushes a small scraper connection rod to move in an opposite direction so that a small scraper can scrape off water scale on the outer wall of the drum; water scale on the water tank is mechanically removed, and the breeding efficiency is improved.