To provide a drum-type washing machine by which unbalance vibration is reduced and washing is well performed and the laundry can be easily cast into and took out from a drum.

In the drum-type washing machine having an inclined rotation axial center, a cylindrical washing drum with bottom whose casting port faces upward, the outer diameter D of the front end portion in the charging port side of the washing drum is larger than the outer diameter d of the rear end portion of the same.