The present invention provides, in a physical quantity measuring system using a vibrator, a supporting structure of a vibrator for reducing the zero-point temperature drift of detection signal. It is provided a supporting member 22 for supporting a vibrator 1A with bonding wires 26. The supporting member 22 has a supporting plate 40 with an opening 25 formed therein to be positioned direct under a vibrator 1A, and a bonding wire 26 comprising a bonding end 29 to be bonded with the vibrator 1A, a fixed portion 26a fixed on the supporting plate 40 and a bent portion 28 direct under the opening 25. A distance "L1" between the bent portion 28 and a position 39 where the bonding wire 26 starts to protrude from the supporting plate 40 is 10 percent or more of a distance "L2" of the bent portion 28 and the bonding end 29.