The present investigation was designed to evaluate some external and internal qualities of Pati duck eggs. A total of 200 eggs were randomly collected from the Pati ducks in the farm complex of College of Veterinary Science, Khanapara, Guwahati, Assam, India under ICAR-NASF project. The egg quality traits like egg weight (g), specific gravity, shape index, egg shell thickness (mm), eggshell membrane thickness (mm), albumen index, yolk index and Haugh unit were found as 54.57±0.81, 1.287±0.034, 73.23±0.40, 0.391±0.013, 0.086±0.008, 0.144±0.006, 0.413±0.024 and 100.73±0.56, respectively. The result obtained in this study will be helpful in future selection and breeding strategies of Pati duck.