Background: The foramen magnum lowers the cerebellar tonsils in Chiari type 1 malformation (CM-1). Patients may be asymptomatic or have mild to severe symptoms. Objective: To determine whether surgery is effective in treating Chiari malformation type I symptoms. Methodology: From March 2019 to March 2022, the Beni-Suef University Hospitals research team retrospectively studied 10 CM-1 patients who received surgical decompression. All patients underwent preoperative neurological, ophthalmological, and radiographic tests. All patients got craniocervical junction MRI and brain CT. Microsurgical procedures included suboccipital craniectomy (2 cm x 2 cm), C1 laminectomy, Y-shaped dural incision, cerebellar tonsil excision, and augmentative duroplasty with fascia lata graft. After 24 hours, all patients had CT brain scans. We scheduled post-op MRIs for three and six months. Results: The average age of the patients was 29.2 years, with 60% being female. All patients (100%) developed Valsalva-aggravated occipital headache, neck pain in 8 patients, and dizziness and tiredness in 7 individuals. There are eight instances [ of Chiari malformation type I associated with syringomyelia. After surgery, 5 patients (50%) had good results, 3 (30%) had medium outcomes, and 2 (20%) had poor outcomes. A follow-up MRI six months after surgery showed a moderate to large decrease in syringomyelia syrinx size in four patients, a slight reduction in two and no change in size compared to pre-operative measures in two individuals. All procedures worked. For chronic wound collection, only one case necessitated a ventriculoperitoneal shunt. Conclusion: Patients' needs and symptom intensity should guide the customization of CM-1 therapy. In symptomatic patients, decompression of the posterior fossa bone, cautious durotomy, tonsil reduction, and duroplasty with fascia lata graft all improve clinical and radiological outcomes. Closing the dura watertight prevents cerebrospinal fluid leaks and wound infection.