The work aims to research the impact of bottom supporting point of triangular support on the cushioning and anti-vibration properties of 0945-type corrugated paperboard liner. With the horizontal distance between the bottom supporting point of the 0945-type liner's triangular support and the edge as structural parameter, and then five kinds of 0945-type liner samples were made by B-flute corrugated paperboard. Through the static and dynamic compression tests and random vibration test, the cushioning and anti-vibration properties of the liner were analyzed. The stress-strain curves showed that the maximum stress of liner reached up to 78 kN when the distance between the bottom supporting point and the edge was 40 mm. The unit volume strain energy of the liner was 35.67 kJ/m3 when such distance was 0 mm. The maximum acceleration-static stress curve showed that the maximum acceleration of the liner was the minimum when the distance was 40 mm. Power spectral density curve of random vibration showed that the peak of power spectral density was the minimum when the distance was 0 mm. When the triangular support of 0945-type corrugated paperboard liner is right triangular, the perpendicular edge can endure larger loads and produce smaller deformation and not be easy to collapse, and the cushioning and anti-vibration properties are the best.