The invention belongs to the field of electric assistance equipment, and in particular relates to a portable telescopic branch cutting machine. The portable telescopic branch cutting machine comprises a supporting rod, a motor arranged at the top end of the supporting rod, and a saw blade arranged at the power end of the motor, wherein the supporting rod comprises at least three sliding rods which are slidably connected and sheathed together; a spring latching device is arranged between every two adjacent sliding rods; each spring latching device comprises a spring fastener arranged at the bottom end of the above sliding rod and a buckle arranged on the lower sliding rod and matched with the spring fastener. Compared with the prior art, the portable telescopic branch cutting machine has the advantages and positive effects that by providing a conveniently telescopic supporting rod, the disadvantages of a traditional branch sawing machine are solved; meanwhile, by providing a handle and by virtue of the cooperation of the handle and a waist seat, the using comfort is improved, the working fatigue is reduced, and the portable telescopic branch cutting machine is simple in structure and convenient to use.