In the context of economic globalisation and the in-depth development of multinational corporations, how to develop and utilise human resources, stimulate the maximum potential of people, and organically combine the development of talent potential with the improvement of organisational performance is the great challenge facing the human resource management work of various enterprises at present. Psychology, as a discipline directly based on human research object, the use of its research results in the field of human resource management can help human resource workers to be more scientific and efficient in identifying, employing and retaining people. Therefore, this paper is based on the previous research foundation, mainly using Enneagram Psychology theory, the theory will guide the practice, the use of literature research method and questionnaire survey method, issued 110 questionnaires, to understand the current situation of human resource management in Shenzhen Nanshan District L company, the real needs of employees and the existence of the company’s management of the opinions and suggestions. The study found that the company currently exists human resource problems such as old conceptual year of human resource management; lack of clear organisational knot scientific management planning; and insufficient key links. By applying Enneagram Psychology theory to the company’s human resource management system, the author gives the following suggestions: adhere to the human-centred approach and establish a modern human resource management concept; use personality tests to establish a convenient and practical recruitment system; integrate personality characteristics and set up a reasonable career plan for employees; establish a sustainable and differentiated training system in order to improve the overall quality; consider the personality characteristics and set up a sustainable training system; and take into account the differentiation between the two types of training systems. Differentiated training system; Considering personality differences, establish scientific performance system and salary structure. Most of the current Enneagram Psychology studies only initially study development and career planning, this study combines the practical application of enterprise human resource management, accumulates more practical experience, and provides high practical value for enterprise human resource departments to use Enneagram Psychology and methods to select and recruit personnel more effectively, make good job matching, and promote the healthy development of the enterprise.