Abstract: The vibration detecting apparatus comprises a pickup 2 encasing a piezoelectric element 8 therein, a cord 3 for transmitting an electric signal output by said piezoelectric element 8, and a noise absorbent member 4 in the form of a lump made of rubber, and formed therein with a cord insert path having at least one direction-changing portion 14a, said noise absorbent member being mounted at a suitable position of said cord. The noise absorbent member is preferably made of low repulsion elastic rubber and is preferably spherical. The cord inser path 14 is preferably in the shape of substantially U. According to the aforementioned construction, noises such as a wind-cut sound and a frictional sound generated at the cord can be effectively removed.