A training cable fixing sleeve comprises a sleeve body and clamping parts arranged at the two ends of the sleeve body. Each clamping part consists of a housing and a plurality of clamping assemblies arranged on the housing. Each clamping assembly includes a guide shell fixed on the housing, a screw in threaded connection with the guide shell, and a clamping slider arranged in the guide shell, wherein the contact surface, contacting a cable, of the clamping slider is a cross dentate surface. By adopting the training cable fixing sleeve, a cable can be clamped effectively, and cable sliding and come-off can be avoided. The training cable fixing sleeve is simple and light, makes cable assembly and disassembly convenient, and can be used repeatedly. Waste cables produced during cable jointer assessing and training can be reused, the evaluation cost is reduced effectively, and obvious economic benefit is created.