The invention discloses a handheld laser soldering gun. The handheld laser soldering gun comprises a handle and a laser generator; the laser generator is mounted in the handle; a light transmitting pipeline is fixed to the position, corresponding to the laser generator, of the upper part of one side of the handle; a protective pipe sleeves the periphery of the light transmitting pipeline; a lightreflecting mirror is arranged at the end, far away from the laser generator, of the light transmitting pipeline; the light reflecting mirror is fixed to the front end of the protective pipe; a triggering rod is fixed to the part, below the protective pipe, of the handle; a positioning needle is fixed to the part, positioned below the light reflecting mirror, of the triggering rod; a connecting rodis connected between the triggering rod and the protective pipe; a battery compartment used for containing a storage battery is formed in the handle; a pressing type control switch which is used forcontrolling the storage battery to supply power to the laser generator is fixed to the handle; a charging port is formed in one side of the handle; and the charging port is connected with the storagebattery through a conducting wire. The handheld laser tin soldering gun is compact in structural design, meanwhile, the vision of an operator is protected, the accuracy of a welding spot is also improved effectively, and fixed-point precise soldering can be realized.