Abstract: The two-way professional relationship of social work includes the clear cognition of roles,the existence of relationship and the development stage between social worker and clients. Because of the vague professional image of social workers, the clients often mistook social workers for volunteers, good people, friends, relatives, government representatives, sellers or frauds, forming a one-way professional relationship which seriously affected the effectiveness of the social service. It is difficult for social workers to correct the cognitive bias of the clients and sometimes some even use their cognitive bias to achieve their individual or institution purpose, and the mishandle of the social workers leads to the failure of the establishment of the two-way relationship. Towards to a two-way professional relationship, we should enhance the recognition of social work professional image, strengthen the service specification and ethical consciousness of social work, and enhance the sensitivity of social workers.

Key words: professional relationship, professional image, one-way, two-way