Software cost estimation is the most challenging and important activities in software development. Developers want a simple and accurate method of efforts estimation. Estimation of cost before starting of work is a prediction and prediction always not accurate. The exact Software Price Estimation (SPE) is very difficult in the early stages of software development because many of input parameters that are active in software exploit are uncertain in the early stages. Accurate cost estimation helps us complete the project within time and budget. For this work, we have knowledge of all available techniques and tool of software cost estimation. The growing application of software and resource constraints in software task development needs a more accurate estimate of the cost and effort because of the importance in program planning and resource management admitting the number of programmings and software plan using tools and modern methods of modeling. The fuzzy set and fuzzy logic can produce accurate software attributes.