The utility model provides a springboard that construction was used, includes the springboard body, be equipped with open structure's cavity on the springboard body, be equipped with the swallow -tail form spout on the inner wall at the upper and lower both ends of cavity, still include the vertical scroll, the both ends of vertical scroll be equipped with with swallow -tail form spout matched with swallow -tail form boss, still include the arm -tie, the end of arm -tie is equipped with vertical hole, the utility model discloses can set arm -tie and springboard body to a style of calligraphy or T type, but the design of multi -angle makes things convenient for the use of job site.