The invention discloses a platform car based on flexible lifting and handling of ball screws. The platform car comprises a mobile car, a lifting mechanism and a handling mechanism, wherein the mobile car comprises a baseplate, universal wheels arranged under the periphery of the baseplate and handles arranged on two sides of one end of the baseplate; the lifting mechanism comprises two sets of lifting components symmetrically arranged on two sides of the baseplate and a lifting panel arranged at the tops of the lifting components; the handling mechanism comprises a second ball screw, a second driving device and a second ball screw nut; a crank rod sleeves the second ball screw nut; one end of the crank rod is hinged to a handling board. The platform car is simple in structure, low in construction cost and easy for implementation; the ball screws and a programmable servo motor are adopted together to realize remote control, simple operation, flexible lifting and handling and high practicability; meanwhile, the platform car is small in size, light in weight, and convenient to carry and store, can be applied to various occasions and is worthy of wide popularization.