The invention discloses an integrated floor drain. Water replacement and water seal can be achieved automatically, the water-seal and water replacement frequency is high, and the integrated floor drain cannot be dried up, the deodorization effect is lasting, and the integrated floor drain is convenient to install and overhaul. According to the integrated floor drain, a shell is of a cylindrical shell with an open upper end, the inner side of the upper portion of the shell is of a stepped structure, a 45-degree water outlet pipe and a 45-degree water inlet pipe are arranged around the outer side of the shell, the lower end of the 45-degree water outlet pipe is communicated with an inner cavity of the lower portion of the shell, and the upper end of the 45-degree water inlet pipe is communicated with a transverse water inlet branch pipe through a 45-degree elbow, the lower end of the 45-degree water outlet pipe is communicated with the inner cavity of the lower portion of the shell, andthe upper end of the 45-degree water outlet pipe is communicated with a transverse drainage branch pipe through a 45-degree elbow; a cover plate and a water strainer are sequentially arranged on the shell, a double-water-seal structure is formed through the cooperation between the 45-degree water inlet pipe and the shell and the cooperation of the shell and the 45-degree water outlet pipe, and thewater seal depth is greater than or equal to 50 mm. The integrated floor drain is widely applied in the field of drainage at the same layer.