Marketing strategies that are formulated and implemented for the management and leadership of a company or industry have a direct effect on gaining the trust of customers and developing its sales. On the other hand, the issue of customer trust and factors affecting it is of particular importance. In today's changing conditions that govern the administrative, economic and social environment, one of the factors that can help increase the efficiency, effectiveness and satisfaction of customers' trust in the public sector is the productivity of human resources. Therefore, the purpose of this research is to investigate the relationship between marketing strategies on gaining customers' trust, taking into account the role of human resources productivity. This research is applied and descriptive in terms of information gathering, based on the structural equation model. The statistical population includes all managers and employees of the North East Health Center of the oil company. Considering the population size of 200 people, the sampling method was determined by simple random sampling with a sample size of 127 people. In order to achieve the central goal, 10 hypotheses were proposed, all of which have been confirmed. In order to test the hypotheses, the probability value obtained from the model processing was used in the significant state of the parameters. Fitting the proposed model by explaining the hypotheses in the mode of standard estimation and significance of the parameters using SPSS statistical software. It was investigated. With the help of the path analysis test and based on the given processing model, the results showed that there is a significant relationship between the marketing strategies and gaining the trust of customers in the health center of North East Oil Company. Also, the human resource productivity variable moderates the relationship between marketing strategies and customer trust.