The invention provides a splicing type fine metal mask plate and a manufacturing method of the splicing type fine metal mask plate. According to the splicing type fine metal mask plate, multiple sub mask plates (3) are correspondingly mounted in multiple mounting grooves (12) of a mask frame (1) and spliced into the mask plate with the large size, multiple independently-controlled first piezoelectric bodies (51) are arranged between the bottom face of each mounting groove (12) and the bottom face of the corresponding sub mask frame (31), and multiple independently-controlled second piezoelectric bodies (52) are arranged between the side face of each mounting groove (12) and the side face of the corresponding sub mask frame (31); and the corresponding first piezoelectric bodies (51) and the second piezoelectric bodies (52) are controlled in the power-on state to extend or contract precisely so that the levelness and position accuracy of all the sub mask plates (3) can be adjusted by the micro-movement of the sub mask plates (3), the accuracy of the fine metal mask plate can be improved, the yield of the fine metal mask plate can be increased, and the manufacturing cost is lowered. The splicing type fine metal mask plate is suitable for manufacturing a large-size high-resolution OLED display device.