The invention discloses a multi-target clustering method and a device of an automobile and a vehicle-borne 
radar, wherein, the method comprises the following steps: S1, obtaining an original 
target array to be polled and marking each element in the array as an unaccessed state; S2, 
polling each element in the original 
target array, and obtaining a corresponding new array according to the element in the unaccessed state being polled; S3, 
polling each element in the new array, and obtaining the corresponding cluster array according to the element in the unaccessed state being polled; S4, pollingeach element in the cluster array, and adding the element in the unaccessed state to the corresponding new array; 5, after that 
polling of the clust array is completed, returning to S3, and after thepoll of the new array is completed, returning to S2; 6, after that polling of the original 
target array is completed, the element with the largest amplitude in each new array forms a clustering target array. This method can improve the accuracy of vehicle-borne 
radar target clustering, and has a good clustering effect on large targets.