In order to deeply study the shear performance of the steel-ultra-high performance concrete (UHPC) interface studs and the PBL hybrid shear bond, a practical calculation method is proposed to guide the engineering design and application. Based on the engineering background, 12 model specimens in 6 groups are designed and taken under push-out tests. The test results show that: (1) The load-slip curves of the stud shear key, PBL shear key, and the hybrid shear key of stud and PBL in UHPC have similar curve characteristics and can be divided into elastic, plastic damage, and three destruction stages. (2) In the service stage, the studs and the PBL in the mixed shear connector bear the load together, and the load sharing ratio is proportional to the respective stiffness. According to the theoretical analysis of the shear performance of the studs and PBL in UHPC, the practical experience formulas of the load-slip curves of the studs and PBL in UHPC, the calculation formula of shear capacity, and the recommended value method of shear stiffness are respectively proposed. The force distribution of each part of the stud and PBL hybrid shear connection is analyzed. Based on the principle of stiffness distribution according to the load, a practical empirical formula for the load-slip curve of the UHPC interface stud and the PBL hybrid shear key is proposed. Finally, the practical formula of the UHPC interface stud and PBL hybrid shear key proposed in this paper is used to check the actual bridge pier column, and it is shown that the shear safety factor is 2.17 and the shear slip is 0.04 mm, which is in line with the actual engineering bearing limit state and serviceability limit state requirements. This paper presents the calculation method of stud and PBL hybrid shear connector, which lays the foundation for its engineering application. Key words：bridge engineering；stud-PBL shear connector；experiment design；static analysis；failure mode；load-slip curve