In conclusion, The THz optical characteristics of several types of AI viruses were investigated using nano-metamaterial sensing chip with THz spectroscopy. Multi-resonance nano-antenna sensing chip is very useful to detect optically unknown bio samples, especially, as such viruses without their unique fingerprinting at reliable frequency range. This preliminary attempt allows us to select suitable single-resonance nano-antenna optimized for the special virus detecting. The measured THz spectra for various virus samples were analyzed in terms of the optical properties, and discussed with FDTD simulations demonstrating that spectral changes can emerge from the optical properties of samples near the nano-antenna. According to the optical properties including complex refractive index and absorption characteristics, tested viruses could be categorized with respect to their subtypes. Moreover, the virus quantification was successfully performed with a concentration dependence. Introduced nano-metamaterial based THz sensing, here, can provide a quick solution for the detection of AI viruses in non-contact and label-free manner, allowing quantification with very high accuracy additionally.