The invention discloses a soft package type lithium battery module, which comprises a printed circuit board provided with a plurality of rectangular cavities and a battery core, the electrode lug of the battery core penetrates the cavity, A connection copper foil is arranged between the cavities of the printed circuit board, a fixed copper sheet is soldered above the connection copper foil, and then the electrode lugs of the battery cells penetrating the cavities are soldered on the fixed copper sheet, thereby realizing the series-parallel connection of the battery cells, and finally, the battery management system (or the protection board) is communicated with the battery cells in series-parallel connection through a connector. As compare with that conventional technology, the electrode ear welding process of the existing soft-clad lithium battery module is improved, the circuit connection mode of battery and battery management system and the overall structure design of battery modulesystem, The invention eliminates the manual welding mode of the existing soft-pack lithium battery module, improves the efficiency, reliability and safety of assembly, improves the returnability aftererror in assembly and the repairability and maintainability after sale, thereby greatly reducing the comprehensive cost and improving the economic benefit.