Customer Relationship Management (CRM) is an effective tool in business strategies to improve the customer satisfaction and customer loyalty. Improving the customer relationship helps to improve the customer satisfaction and profit of the companies. Many researches involves in applying the various CRM model and methods to analyze the important factors in CRM. In this paper, the recent researches in the CRM model were reviewed to analyze the advantages and limitations. The regression analysis in the CRM model shows the effective performance in investigating the customer satisfaction and relationship. Some researches uses only positive comments for the CRM model and negative comments were also need to include for effective performance. Social media data are observed to improve the efficiency of the CRM model in terms of customer satisfaction.