“…Usually, these hydrogens motions trigger the displace of N, O, or halogen atoms and result the residual polarization for the ferroelectric properties. A typical case for that are KH 2 PO 4 (KDP) crystals which is well‐known to undergo a ferroelectric phase transition from I 2 d to Fdd 2 at 123 K. However, to our knowledge, most hydrogen bond type ferroelectric molecules still mainly focuses on the four families, namely, i) salts of tartaric acid, such as Rochelle salt;ii) Alkali metal phosphate or arsenate dihydrogen salt family, such as KDP;iii) Organic salt of hydrogen such as triglycine sulfate (TGS);iv) Alum family such as methylamine jarosite, only small amount new hydrogen bond type ferroelectric molecules such as croconic acid were documented recently, the new systems of hydrogen bond type ferroelectric molecules especially accompanying with chiral to chiral phase transitions are still very spare, and the exploration of novel ferroelectric molecules in homochiral system which triggered by H‐bonds remains a great challenge. As we know, a H‐bonds ferroelectric must meet some essential conditions such as having a good electric hysteresis loop and a clear dielectric anomaly as well as the necessary crystallographic requirements of one of the ten polar point groups in the ferroelectric phase ( C 1 , C 2 , C s , C 2v , C 4 , C 4v , C 3 , C 3v , C 6 , and C 6v ) …”