The invention discloses a guard bar free child safety bed for a training aid. The child safety bed can be used for teaching children to do various sport actions and comprises a bed body, wherein the bed body is of a cylindrical plate shaped structure, the middle of the bed body is provided with an installing beam, the installing beam comprises two columns and a cross rod connected between the twocolumns, the two columns are fixedly connected with two ends of the middle of the bed body, a the middle of the cross rod is vertically provided with a rope via hole, the rope via hole is located in the central position of the bed body, a safety pull rope penetrates through the rope via hole, an upper rope slot communicated with the rope via hole is formed in the upper end face of one half of thecross rod, the outer side of the column adjacent to the upper rope groove is provided with a loser rope slot communicated with the upper rope slot, the part, upwards penetrating through the rope via hole, of the safety pull rope is laid in the upper rope slot and the lower rope slot, a balance weight part is fixed to the end, located in the lower rope slot, of the safety pull rope, the safety pullrope is retracted by relying on the gravity of the balance weight part, and the part, downwards penetrating through the rope via hole, of the safety pull rope is provided with a connector and is fixed to the body of a child.