The utility model relates to a catching groove type calcium sulfate net floor which is provided with a floor body and a support. The floor body is laid and fixed to the support through fasteners. Limiting grooves corresponding to limiting plates on the support and screw holes corresponding to mounting holes are formed in the floor body, and the floor body is provided with an upper base plate, a calcium sulfate layer and a lower base plate from top to bottom. An elastic net layer is arranged in the middle of the calcium sulfate layer. The upper surface of the lower base plate and the calcium sulfate layer are bonded through non-poisonous water-soluble adhesives, and the lower surface of the upper base plate and the calcium sulfate layer are bonded through non-poisonous water-soluble adhesives. The support comprises an upper bearing plate and a base. An arc-shaped mounting hole used for allowing the base to be fixed to the ground is formed in the base, and an integrally-formed screw rod is arranged in the middle of the base. The upper bearing plate is provided with the four limiting plates formed by the folded edges of corresponding stamped holes and the four mounting holes, and a nut is integrally formed at the lower end of the upper bearing plate. The screw rod is in threaded connection with a locking nut. The catching groove type calcium sulfate net floor has the advantages of saving construction time, being precise in locating and convenient to mount and the like.