As a base, cement-stabilized macadam material offers high strength, which increases with curing age, good plate properties, low deflection and strong load diffusing capacity. However, the poor anti-shrinkage performance and self-healing ability of the semi-rigid base lead to the cracking of the base, which leads to cracks in the asphalt pavement. Crack disease has become the most prevalent disease impacting pavement structure. The fracture resistance of the cement-stabilized macadam base has a direct impact on the service life of asphalt pavement. Based on Yan-Chong expressway test segment, this article proposes laying basalt fiber belt in a cement-stabilized macadam base to construct reinforcement, employing the interface bonding friction force and mechanical biting force between the continuous fiber belt and cement to accomplish anti-crack properties. To investigate the effect of basalt fiber belt of varying width and curing age on the Unconfined Compressive Strength (UCS) index of a cement-stabilized macadam base, the compressive strength of a cement-stabilized mixture of varying width and curing age was measured under indoor experimental conditions. The test findings demonstrate that as the curing age increases, so does the UCS of the specimens without basalt fiber belt, 25 mm width and 50 mm width. Nevertheless, at 7 and 28 days of curing, the specimens laid with a laid with basalt fiber belt had a lower UCS than the unlaid specimens, and the difference was closing as the curing age increased. The UCS of reinforced cement-stabilized macadam with a 25 mm wide basalt fiber belt at the 90-day curing age is nearly identical to that of cement-stabilized macadam with standard mix ratio. Additionally, the strength difference of a 50 mm wide basalt fiber belt has also been cut in half.