Human Resource Management (HRM) has become an essential part of a company's business strategy that could provide a comprehensive and strategic approach to people management , particularly multinationals. However, IHRM is much more complex than HRM, particularly in terms of operation. In this essay, I will outline the functions and activities of HRM and IHRM, and then mainly analyze the IHRM complex through organizational strategy and operation. HR practitioner has become an increasingly popular and important job title over the past two decades. As a national HR practitioner, he has to worry about a few steps and operations. First, HR practitioners need to have a “big plan” to understand the business strategy and then develop a mission statement, linked to the people in the organization. Additionally, a SWOT analysis can help HRM focus well on internal and external information. Subsequently, conducting a detailed HR analysis is the most important operation, HR practitioners focus on the COPS (culture, organization, people, HR systems) of the organization, such as beliefs and ethics of employees , the management style and culture of the organization; the structure and professional roles of the organization; staff skills and potential; the link with LMs, personnel selection, reward system, employee relations, training and development, etc. Finally, develop the HR analysis solution and implement operations. The U.S. Department of Labor exhibited clear characteristics of good human resource management in 1993: careful and extensive systems of recruitment, selection, and training; formal system for sharing information with employees of the organization; clear concept of work; participation procedure; attitude monitoring; i...... middle of document......1 (3), pp.5-23.Johnson Gerry, Scholes Kevan (1998) Exploring Corporate Strategy, Pearson Education.O'Keeffe, T. 2003 Preparing Expatriate managers of multinational organizations for the cultural and learning imperatives of their new environment. Journal of European Industrial Training: MCB University Press, Vol. 27: Issue 5Porter, M (1985), “The Value Chain and Competitive Advantage” in Competitive Advantage: Creating and Sustaining Superior Performance, Free Press, New York, pages 33-61. Price Alan (2007), “Human Resource Management in a Business Context` Third Edition, Thomson, page 202.Storey, J. (1992) Developments in the Management of Human Resources, Oxford: Blackwell.Storey, J. (2007) ) “Human Resource Management Today: An Assessment” in J. Storey Human Resource Management: A Critical Text (3rd edition) London, Thompson, page 3-14.