As early as 1926, Stock et al. succeeded in experimentally synthesizing an isoelectronic species of benzene, B3N3H6, named borazine and popularly known as inorganic benzene, which is formally a product of the complete substitution of the CC unit of benzene by BN, as shown in Scheme 1. Inspired by this synthesis experiment, extensive research has been conducted on the aromaticity of borazine, but the conclusions are inconsistent. For examples, Iwaki and Udagawa 5 investigated the effect of the introduction of heteroatoms into the benzene on the aromaticity through index of deviation from aromaticity (IDA), nucleus-independent chemical shift (NICS), and harmonic oscillator model of aromaticity (HOMA) methods, and the borazine is accordingly proposed to be anti-aromatic, non-aromatic, and aromatic, respectively; Schleyer et al., after calculating the NICS values separated into the NICS() and NICS(π) contributions, stated that the borazine is not aromatic due to the strong polarity of B-N bond, similar to the conclusion drawn by Jemmis et al. through magnetic susceptibility exaltation (MSE) and from the NICS analyses; Du and coworkers reported the very small gauge-including magnetically induced current (GIMIC) value for borazine, which indicates that borazine is weakly aromatic; Using the dissected magnetically induced current density (MICD) and aromatic stabilization energy (ASE) in combination with Hückel's as well as Baird rules, Báez-Grez and Pino-Rios 14 also demonstrated that borazine should be considered as a weakly aromatic system, and they argued that the aromaticity is associated with a so-called hidden ring current; Islas et al. split the π molecular orbitals from the σ ones and used the induced magnetic field (B ind ) and the electron localization function (ELF) methods to derive that borazine should be described as a π aromatic compound, but it is not globally delocalized; Some energetic-based measures have established the aromaticity of borazine, and the degree is about half of that of benzene. In short, it can be seen that the aromatic character of borazine is still a controversial matter to date.