The invention discloses a method for detecting rearrangement clonality of correlative genes of lymphocyte and belongs to the technical field of biology. According to the method, a high-throughput next-generation sequencing method is adopted for detecting rearrangement clonality of the correlative genes of lymphocyte tissue, and specifically, a multifunctional primer and a PCR reagent are utilizedto conduct multiplication on samples to be detected at first to obtain a multi-sample gene locus multiplication sublibrary, wherein both ends of the multiplication sublibrary are connected with DNA segments of different connectors, one side of the multiplication sublibrary is a sequencing connector which can contain a sample tag for distinguishing sequencing results of the different samples, and the other side of the multiplication sublibrary is a fixed connector used for connecting caught particles; then, high-throughput sequencing is conducted on the multiplication sublibrary, sequencing results are subjected to classified sorting according to a tag sequence, the samples and target genetic loci, and whether or not there is clonality rearrangement of target genes is analyzed. The method has the advantages that the detection throughput, the sensitivity and the specificity are high, the sensitivity can reach 0.01%, and the DNA concentration of the samples can be lowered to 0.1-1ng/microliter.