PROTAC BTK degraders-5(compound 3e) is a selective BTK PROTAC degrader with a DC 50 value of 7.0 nM in JeKo-1 cells. PROTAC BTK degraders-5 has no off-target effect on degrading CRBN neosubstates. PROTAC BTK degraders-5 has anti-proliferation effect on various lymphoma tumor cells and can be used in chronic lymphoid malignancies research.