Background: There is a lack of research on sling neurac exercise interventions for craniovertebral angle (CVA), head rotation angle, range of motion (ROM), and neck postural alignment in adults with forward head posture Objectives: To investigate the Immediate effects of sling neurac exercise on craniosacral angulation, ROM, and neck postural alignment in adults with forward head posture. Design: Quaxi-experimental study. Methods: Fifty young adults in their 20s were divided into a sling neurac exercise group (SNEG) and a control group (CG). SNEG conducted sling neurac exercise intervention for one day, and CG did not implement intervention. Craniosacral angulation, ROM, and postural alignment before and after exercise was evaluated for each group. Results: In the sling neurac exercise group (SNEG), CVA, cranial rotation angle (CRA), ROM, and postural alignment improved significantly after intervention (all P<.01). There were no significant differences in the control group (CG) (all P>.05). After the intervention, there were significant differences between the groups in craniosacral angulation, ROM, and postural alignment (all P<.01). Conclusion: The Sling neurac exercise can significantly improve CVA, CRA, ROM, and postural alignment. Therefore, it is suggested to consider sling neurac exercise as an intervention.