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Due to the requirements of suspension layout space and vehicle performance, a damped continuously adjustable shock absorber with builtin solenoid valve was designed based on principle of pilot valve. The structure of the adjustable shock absorber and the formation principle of adjustable damping force were introducted. And then the working strokes of the adjustable shock absorber was modeled mathematically based on the theory of fluid mechanics and the abstract model of shock absorber working stroke. The simulation model was also established by Matlab/Simulink and different characteristics of the adjustable shock absorber at different currents were obtained. Combining with the national standard of the passive shock absorber, the experiment proposal of the novel damped continuously adjustable shock absorber was designed. At the same time, the adjustable shock absorber test was carried out on the INSTRON-8800 CNC hydraulic servo single-channel excitation platform. From the test results, it can be seen that the adjustment range of rebound damping force was 0~3.72kN, the adjustment range of compression damping force was 0~1.01kN. The error of the test and simulation results did not exceed 10% as the current was in the range of 0.2~1.4A and it did not exceed 20% as the current was more than 1.4A, which confirmed the accuracy of the damper model and feasibility of the damped continuously adjustable shock absorber. The relationships between the damping force and the currents were acquired which can provide data support for the matching development of its semi-active suspension controller and provide the reference for the design of the damped continuously adjustable shock. The relationships between the damping force and the currents were acquired, which can provide data support for the matching development of its semiactive suspension controller and provide the reference for the design of the damped continuously adjustable shock.