The invention discloses a CORDIC algorithm device and algorithm with low time delay and high frequency unidirectional rotation. Firstly, by replacing the full quadrant with [0, pi/4], the lookup tablecan be compressed by half to save resources. Then the table-lookup method and the one-way rotation iterative operation are combined. Finally, the result is obtained by a one-way addition tree mergingiteration. Compared with other algorithms, one-way rotation can save resources and reduce power consumption to the maximum extent, and merging iteration is realized by parallel operation of additiontree, which can meet the timing requirements at high frequencies and effectively shorten the time delay. Through simulation verification, it is found that the overall performance of the invention is obviously improved compared with the traditional CORDIC algorithm, the time delay is shortened, the resource consumption is reduced, the highest working frequency is increased, the invention is more suitable for high-frequency scene, and the synthesizer synthesis pressure is reduced, which is favorable for obtaining the optimal structure and the smallest area.