The importance of the issue of security in all broad levels of science is obvious, and this issue has been paid attention to in the field of urban design for some time, but women, who are generally known as relatively vulnerable groups, are not particularly considered in urban security issues. Have not been paid attention to. In the current research, the role of designing and modifying urban spaces in preventing the occurrence of crime for women has been discussed. In order to achieve this goal, field studies were carried out in Tehran’s 6th district, especially Valiasr Street, which was chosen because of the high traffic density and the number of visitors to it, as well as the problems related to the safety of women using the environment. Is In order to analyze the collected research data, two analytical and inferential methods have been used. In the analytical part, average and standard deviation statistics have been used to present the analytical information of the society and the statistical sample, and in the inferential part, statistical inferential tests have been used to test the hypotheses. The tool used in this research to analyze research data is SPSS software, and Chi-square test, beta coefficient, correlation coefficient, standardized multiplication and unstandardized coefficient and other statistical tests were used to analyze the data. Is The results of the research show that the results of this survey show that women’s sense of security in public spaces is affected by environmental design and the proximity of public spaces to various uses. The result is that the necessity of meeting the specific needs and standards of women and using approaches such as defensible space, crime prevention through environmental design, rational choice and public security and other related ideas that can provide these needs and standards in the design of public spaces and environments in cities. Should be noticed by planners and urban designers.