Public spaces, by creating the possibility of participation, group presence and interaction space have a major role in strengthening social and cultural aspects of cities.In urban projects which are prepared for the small and middle cities in Iran, not be noticed to public spaces.However, on these cities, friendship and family relations is a valuable and robust, and need to participate in city and urban spaces, for leisure time, has less; but the fact is, the existence of such spaces in the old towns, has played an important role and has specific functions.The old Bazars of cities were the most public social and functional axis that has had an important role in public space function. The purpose of this article is quality criteria survey of the Bazars in traditional cities with emphasizing on "Bazar Qeisarye Lar" (because of the valuable history and unique beauty and maintain its status in the "Lar old city") and solutions presentation to improve the quality of these place as public space.This research method is descriptive – analytical by using of survey observations and interpretations in the form of 50 questions and a sheet. Based on the standard questionnaire of PPS (Project for Public Space, http://www.pps.org), four measures of public spaces quality (Comfort and Image, Access and Linkage, Activity and Uses, Sociability) is a considered. The results of a questionnaire and their allocation to each component, has been made by using the "bipolar interval scale method". Options to each question is rated from 1 to 9, then gathering up the score of different options from each question , the overall score for each question is calculated.The score of each component is calculated from combined the score of relevant questions. Thus results show that Comfort and Image, Access and, Activity and Sociability are 704, 623, 512, 240 points.Because of history, evocative, sustainability and Bazars symbolic status that have important role in nationalistic nts, the Comfort and Image component having the highest point.Loss of the pedestrian and cars crossing around the Bazar in Access component, and single functioning of the Bazar and a weak connection with adjacent spaces in Activity component, reduces the scores of these components.In the past, Bazar with multiple gateways and connect with the other social spaces, including the "Sara" and "Public centers", and especially, "mosques", as a single unit, causing the Bazar to play a significant role in Sociability component. Today, because of breaking this connections, the value of this component is greatly reduced.Interior Bazar in "Charsuq", the place was a pause and social exchange that lost its importance today.On the other hand, business class Bazar, as the most popular group of the city, always had a role in city government and adding to the public participation, which has lost its status now. Finally, strengths and weaknesses reasons for each component is analyzed based on the physical condition of the "Bazar" and it has led to strategies the quality of space improving.