The invention discloses a tin soldering paste for laser and a manufacturing method and an operation process thereof. The tin soldering paste production device for the laser comprises a machine body, apower cavity is formed in the machine body, stirring cavities are symmetrically formed in the left side and the right side of the power cavity, two kinds of resin are added into the stirring cavitieson the left side, an activating agent and a solvent are added into the stirring cavities on the right side, and then turning on a motor in the forward direction so as to drive the through crankshaftto rotate. The preparation method can be used for preparing the tin soldering paste by heating and stirring the resin, the active agent, the solvent and the tin powder, in the stirring and manufacturing process, the stirring sequence and the stirring temperature and duration can be strictly controlled, so that the quality of the product can be guaranteed; meanwhile, compared with a large-scale production line device, the tin soldering paste has the advantages that the occupied area is small, can be applied to a small-scale factory, and the cost is saved.