To provide a hydroponic culture system which enables the culture even in a site where the year-round culture has been difficult in the case of a conventional method and also the harvest of crops having uniform quality and size, without using agrochemicals.

The sheet used in the hydroponic culture system is divided to spaces having definite volume to increase the strength and is formed by a special weaving method to endure the pressure from any directions such as vertical direction and lateral direction. Since the sheet has a solar wave diffusing function in addition to the strength, the solar light is uniformly introduced into the whole area of the house. The environmental load is minimized by taking advantage of the phenomenon that air in a pipe embedded in the ground is warmer than the outer atmosphere in winter season and cooler than the outer atmosphere in summer season. The culture bed 4 has a special grooved bottom face 5 to minimize the amount of the culture liquid and is provided with an unbiased dedicated cap 6 for a culture bed. The culture bed is attached to give the inclination angle of 1-9 to the flow of the culture liquid.