The utility model provides a built -in fitting for concrete construction, including dull and stereotyped (1) and a plurality of and the face vertically landing leg (2) of dull and stereotyped (1), thecharacteristics of this built -in fitting lie in, through -hole (11) have been seted up at the middle part of dull and stereotyped (1), landing leg (2) distribute in through -hole (11) on every side,through -hole (11) are used for making vibrating rod to pass dull and stereotyped (1). The utility model provides a built -in fitting makes things convenient for the workman to vibrate to the concrete of built -in fitting below, makes the concrete obtain abundant vibrating to guarantee the closely knit degree of concrete effectively.