Chiral metamaterials play vital roles in manipulating the circular polarization of electromagnetic waves. Although planar chiral metamaterials are believed to have no true/intrinsic chirality, the design of structural anisotropy can still create enormous circular dichroism, while the mechanism is fully explored. Here, for the first time, it is observed that strong near-field coupling induces less chiral response in chiral metamaterials. Selective exposure methods to manipulate the near-field coupling strength, and experimentally validate the circular dichroism difference from tailored near-field coupling effect are leveraged, which provides strong evidence for the assumption and can be utilized for the structural design framework. Besides, using the enhanced near-field (over 750-fold), surface-enhanced vibrational circular dichroism (SEVCD) for glucose enantiomers, which shows a larger-than-one normalized sensitivity compared with metamaterials with chiral response is demonstrated. Furthermore, The potential of SEVCD by detecting a broadband signal using arrayed metamaterials is explored. These findings pave the way toward chiroptical nanophotonic designs for potential biomedical and healthcare applications.