Provided is a heat-shrinkable tube having tearability, which is made of a fluororesin, particularly, a tube having excellent tear straightness and high heat-shrinkability at low temperature. The tube is a heat-shrinkable tube having tearability, which includes, as a base resin, a copolymer including at least tetrafluoroethylene and hexafluoropropylene as constituent monomers, and as a resin other than the base resin, a copolymer including at least tetrafluoroethylene and hexafluoropropylene as constituent monomers, in which a thickness of an entanglement unit of a polymer observed at a cross-section in a longitudinal direction of the tube is 9 μm or less, and has excellent tear straightness and high heat-shrinkability.