The varying calendar clock face consists of face body, year and week ring, year masking ring, and January and February date board; and has date arranging area around the hour and minute scales, year and week ring inside the annular slot around the date arranging area, year masking ring fixed to the edge of the face body, and January and February date board as double-sided board or linked single-sided board in the hollowed out area. The varying calendar is arranged in months and dates and in years and weeks separately. The present invention has simple structure and convenient changing and makes clock possess increased perpetual calendar function.