The invention provides a multi-vehicle-type flexible assembly workstation for vehicle bodies in white. The multi-vehicle-type flexible assembly workstation for vehicle bodies in white comprises a workstation base station and a positioning fixture system. The positioning fixture system comprises a top cover positioning fixture, side wall positioning fixtures and a lower vehicle body positioning fixture which are independent and switchable. The workstation base station comprises a foundation frame, a first guide rail, a top cover fixture and conveying system, bases, a lower vehicle body positioning system and side wall frames. The foundation framework is provided with a crossbeam and a supporting frame. The first guide rail is arranged on the crossbeam. The top cover fixture and conveying system is arranged below the first guide rail. The bases are fixedly connected with the bottom of the supporting frame. The lower vehicle body positioning system is arranged at the bases and is matchedwith the lower vehicle body positioning fixture so as to position and switch the lower body positioning fixture. The side wall frames are arranged at the bases and used for mounting and positioning the side wall positioning fixtures. When the multi-vehicle-type flexible assembly workstation for vehicle bodies in white is used for assembly, accurate positioning and rapid switching can be achieved,full switching of all the fixtures needed for assembly is achieved, and input of the cost for the vehicle type fixtures, welding equipment and the like is greatly saved.