The utility model discloses an optical cable frequency of shoc selectivity amplification device, its characterized in that: including the shock insulation casing, the shock insulation casing is inclosed casing, pack shock insulation oil in the shock insulation casing, there are a plurality of shock insulations to connect the hole on the relative lateral wall of shock insulation casing, the shock insulation connects the downthehole shock insulation that sets up and connects, the optical cable through the shock insulation connect pass the shock insulation casing inside, set up a plurality of resonance unit in the shock insulation casing, the resonance unit shakes post, optical cable clamp including leading, it fixes on the lateral wall of shock insulation casing to lead shake post one end, the optical cable clamp is fixed on the optical cable, it sets up the resonance piece to lead to shake between post and the optical cable clamp, the both ends of resonance piece all set up the resonance spring. The utility model has the advantages of can realize enlargeing to the selectivity of different frequency vibroseis, keep apart irrelevant vibrations to realize that the improvement shakes the sensitivity of optical cable, reduces the misstatement rate, reduces the requirement to demodulated equipment discernment sensitivity.