The utility model provides a flexible clamp which comprises two clamping plates which are oppositely arranged, each clamping plate comprises a bottom plate, an elastic cushion layer arranged on the bottom plate and a contact layer arranged on the elastic cushion layer, and the contact layer is in direct contact with a piece to be clamped. According to the flexible clamp provided by the utility model, the elastic cushion layer is arranged in each clamping plate, so that the fitting degree of the contact layer and the silicon rod is effectively improved, relative sliding between the silicon rodand the contact layer is avoided as much as possible, and the flexible clamp can well adapt to silicon rods with different thicknesses and different surface roughness.