In order to study the flexural behavior of steel-concrete composite beams (PSCB) connected by Perfobond Leiste (PBL), in this paper, the PSCB was designed and the flexural loading test was carried out to analyze its failure mode, deflection, strain and bearing capacity. Based on the simplified plastic theory, a formula for calculating the flexural capacity of steel-concrete composite beams considering the influence of PBL connectors was established. The results showed that the failure mode of PSCB was bending damage, and its strain pattern along the beam height direction was basically consistent with the flat section assumption before 0.79Pu. The formula for calculating the flexural capacity of steel-concrete composite beams with PBL connection was derived by simplified plastic theory. The calculated values of the formula were basically consistent with the experimental values. When calculating the flexural capacity of PSCB, the role of perforated steel plates in PBL connectors cannot be ignored.
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