Sewing Machine is one of the most important factors affecting the quality of the clothing industry. Also, leather garments require special care during sewn. The purpose of this paper is to study sewing leather fabrics Techniques to reach the highest degree of quality and efficiency of sewingleather and the efficiency of functional and aesthetic appearance of clothing and age consumer. And by identifying some of the research variables, there was two leather type (sheep natural leather – Pu artificial leather), the skin of sheep is the most commonly used types of leather in the field of leather garments.There was a comparison between two types of sewing machines (Ordinary sewing machine – leather sewing machine) and using two types of thread (polyester – nylon). Then we examined leather using a number of test methods like thickness, tensile strength, abrasion and seam pucker according to standards. . Tests took place into conditioned atmosphere of 21ºC and 65% RH. Comparisons have been made between the two different types of sewing machines and also between the two different thread types this was done with reference to seamed lines' durability, efficiency and appearance. In conclusion we was able to determine the best quality to sew leather garments in terms of identifying the type of sewing machine-the type of sewing thread To suit every type of leatherin this test.