Hash functions serve as a fundamental cryptographic primitives and are used in numerous security fields, such as cloud audit, digital signature, block chain and random number generation. Recent years, cryptographers have long delved into parallel hash functions to design more efficient cryptographic primitives. This paper proposes a multi-iterative parallel hash function. Moreover, inside this parallel structure, a four branch parallel compression structure is proposed to accelerate message diffusion. Simulation results show the proposed hash scheme has great performance on both efficiency and security.