The present invention discloses a probe applicable to high-throughput sequencing and a method of enriching a target region using the probe. The probe includes, in an order from a 5' end, a connection arm, a masking sequence 1, a UID sequence 1, an Illumina Tag1 sequence, a dU region, an Illumina Tag2 sequence, a UID sequence 2, a masking sequence 2 and an extension arm; wherein the masking sequence 1, the masking sequence 2, the dU region, the UID sequence 1, and the UID sequence 2 may be 0bp. When sequencing is performed by using a library built by the probe of the present invention, it is not necessary to add a sequencing primer additionally, and adopting the method of the present invention may directly use an RNA as a template to capture a target region, so as to simplify the experiment procedure.
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