The invention discloses a FinFET device-based unit line non-symmetric storage unit. The unit comprises a bit line, a write word line, a read word line, a first FinFET, a second FinFET, a third FinFET, a fourth FinFET, a fifth FinFET, a sixth FinFET, a seventh FinFET, an eighth FinFET and a ninth FinFET, wherein the first FinFET and the seventh FinFET are low-threshold P-type FinFETs; the second FinFET, the fourth FinFET, the fifth FinFET, the sixth FinFET, the eighth FinFET and the ninth FinFET are all low-threshold N-type FinFETs; and the third FinFET is a high-threshold P-type FinFET. The unit has the advantages that under the condition of not influencing circuit performance, the delay, the power consumption and a power-delay product are all relatively small, the noise margin during write operation is relatively large, and the circuit function stability is relatively high.