The invention relates to a portable cableless fixed-point profiler, and belongs to the technical field of marine monitoring. The fixed-point profiler comprises a pressure-resistant shell, an oil sac, a buoyancy regulating device, an underwater acoustic communication device, a control panel, a gyroscope, a steering engine, a fin rudder, a satellite antenna and a cable thermal detector (CTD) transducer, wherein the profiler has functions of vertical section motion, horizontal level control, bottom-sitting, underwater acoustic detection, satellite and underwater acoustic communication and the like, and can be put in a shipborne or onboard mode, so that long-term continuous section monitoring of a position near to a fixed position is realized. According to the portable cableless fixed-point profiler, the problem that a buoy at the section goes with the stream so as to be incapable of realizing fixed-point observation is solved, and the portable cableless fixed-point profiler has good application prospect on marine monitoring and marine military.