The work aims to propose a scissor lift platform which can vary the breadth and set the lifting height, design its mechanical structure and analyze the mechanical properties, with regard to the shortage of single-stage scissor lift platform in present market. The lift platform was modeled via three-dimensional modeling software SolidWorks. The finite element model was created via finite element analysis software Ansys Workbench, and the static bearing property was simulated and analyzed. The overall deformation and equivalent stress were obtained under specific load and four working conditions: lifting and telescopic table plate closing, lifting and telescopic table plate opening, falling and telescopic table plate closing, and falling and telescopic table plate opening. The maximum overall deformation was mainly located on the left edge of the telescopic table plate. The maximum overall deformation under the four working conditions above were 1.97 mm, 1.07 mm, 0.73 mm and 0.33 mm, respectively, and all of them were within the allowable range. The maximum equivalent stress appeared near the joint point of scissors brace. The maximum equivalent stress under the four working conditions above were 47.51 MPa, 40.10 MPa, 185.34 MPa and 170.02 MPa, respectively, which were lower than the yield limit of structural steel material (235 MPa), and the strength met the requirements. The proposed scissor lift platform, which can vary the breadth and set the lifting height, extends the function of the traditional lift platform.