The utility model provides an on - -spot sand hydraulic reclamation building device of indoor simulation, the utility model relates to a simulate the device of on -the -spot sand hydraulic reclamation building, the utility model discloses the purpose realizes at the on -the -spot sand hydraulic reclamation of indoor simulation, it includes mud storage container, the mixer, the material loading machine, arrange the muddy water pump, the hydraulic reclamation cofferdam, drainage canal, waste water sedimentation pond, the cistern, first charging pump, large -scale cistern, second charging pump and air pump, the mixer is installed on mud storage container, the material loading machine is close to mud storage container and sets up, the exit end setting of material loading machine is in mud storage container top, arrange the muddy water pump, second charging pump and air pump are close to mud storage container and set up, the one end of mud pipe and mud storage container's side intercommunication, the other end setting of mud pipe is in the top in hydraulic reclamation cofferdam, the give vent to anger end and the mud storage container's of air pump bottom intercommunication, the utility model is used for sand hydraulic reclamation construction site simulates the field.