The invention discloses a partially prefabricated composite column based on batten plates and a connection method of the partially prefabricated composite column with a beam, and belongs to the technical field of buildings. Concrete of the composite column is poured integrally on the construction site, so that the composite column has better stress performance and more stable member connection, and the use function and the structural function of each node joining area of the composite column are ensured; According to the composite column, two sides of a profile steel web are filled with concrete, the defect of low bending rigidity of I-steel in the minor axis direction is improved, and comprehensive stress performance of the composite column is improved; the composite column gives full play to performances of steel and concrete, profile steel is filled with the concrete, the constraint effect on the concrete is enhanced due to the presence of the profile steel, the possibility of localbuckling or overall instability of the steel due to the presence of the concrete is reduced, and accordingly, bearing capacity and ductility of the composite column are improved; meanwhile, sectionalsize of the composite column is reduced.