Background: The valve disease is frequently caused by the rheumatic mitral stenosis in developing and developed countries alike and it is still a key issue. Although there is a significant decrease in rheumatic fever diffusion, its percentage is still about 12% of the native valvular heart disease. Aim of Work: The key objective of this work was to assess the impact of percutaneous mitral balloon valvuloplasty (PMBV) on the LV torsion and this objective was achieved by using the two-dimensional speckle-tracking echocardiography. Patients and Methods: The study used the prospective observational method and had been carried out in the Department of Cardiology, Al-Azhar University Hospitals. The treatment group consisted of 35 patients who were candidates for PMBV and the control group consisted of 20 matching patients in terms of gender and age but they were healthy. All the participants of study had been assessed using the conventional echocardiography and speckletracking echocardiography on the previous day and 3 months after the procedure. Results: Using the parameters of the conventional echocardiography, we found that there were no significant differences between the treatment group and the control group in the LV ejection fraction (EF) and RV systolic function (TAPSE) before the PMBV. After applying the Speckle-tracking echocardiography, the results indicated that LV torsion decreased in the treatment group compared to the control group before the PMBV. After 24 hours and 3 months after the PMBV, the patients of treatment group had shown a statistically significant improvement in LV torsion. Conclusion: The LV torsion in MS patients significantly improved immediately and in the short-run follow-up after the PMBV