Despite general agreement concerning the indication for operative treatment, the optimal surgical treatment of chronic subdural haematoma (CSDH) is still controversial. There are generally two different surgical methods of treatment of chronic subdural haematoma: evacuation of haematoma fluid by burr hole or craniotomy and removal of haematoma with surrounding membranes. We present retrospective analysis of medical date and computed tomography findings in patients with CSDH treated in the Department of Neurotraumatology of Jagiellonian University between 1983 – 2003. The study group consisted of 433 patients with CSDH treated surgically. In this patients 495 neurosurgical procedures were done. Haematoma was removed by burr hole in 333 cases and by craniotomy in 162. The results of treatment with reference to literature were good in burr hole and craniotomy groups. Evaluation of the results in our study and in literature gives priority to burr hole as the method of treatment. Evaluation of the results depending of age showed significant differences in both burr hole and craniotomy groups. The results of treatment were much better in young than in aged patients. Computed tomography findings in majority of cases can not be used as a basis for selecting the craniotomy as the operative procedure for CSDH.