Back ground: Thesis is an obligatory part of Medical post graduate or post doctoral courses under West Bengal University of Health Sciences. The purpose of this thesis work is to make the doctors familiar with research methodology. There is no procedure or scale to evaluate the quality of thesis works in our state. Aim:Formation of a scale for evaluation of thesis work & using this scale evaluation of ongoing thesis works of this medical university. Procedure: At first we develop a scale containing five factors  Format, Study design,Knowledge of the post graduate trainee,New ideas,Literature reviewed and validation of that scale was done.With the help of this validated scale we have evaluated 135 thesis works of out going post graduate medical students. Result: After evaluation it was found that most of the thesis work fall in the excellent category.Very few are exceptional as well as good or acceptable.The scale also indicated that the weak areas of the thesis works. Conclusion: Our scale will indicate the clear picture of quality of a research work including strong and weak areas. This fact will help us in future to plan a better research work