The invention provides a floating cultivation device.Including: a floating cultivation soil container,The utility model has a holding hollow body.A planting and placing part and a bottom,The planting position is at the top of the holding hollow body and connected with it into a ring.The bottom of the holding hollow body is provided with a water inlet hole.To allow the aqueous solution to enter；A water absorption member,To absorb aqueous solutions,In the soil container,It has a hollow part and a hollow top surface.The hollow top surface is arranged on the top of the hollow part and connected with it.The hollow part is arranged in the containing hollow body；One placing member,The water absorption member is arranged in the hollow part of the water absorption member.Soil is placed on it.To prevent the soil from contacting with aqueous solution.本創作提供一種浮置式栽培裝置，包含：一具浮力之栽培土容器，其具有一容置中空體、一植栽置放部及一底部，其中該植栽置放部位於該容置中空體之頂部並與之連接成一環狀，該容置中空體之底部具有一入水孔，用以使水溶液進入；一吸水構件，用以吸收水溶液，設於該栽培土容器內，具有一中空部件及一中空頂部面，其中該中空頂部面設於該中空部件之頂部並與之連接，該中空部件置入於該容置中空體中；一置放構件，置入該吸水構件的該中空部件中，其上置放土壤，用以阻隔該土壤與水溶液接觸。
