The caring behavior is still partially performed by nurses. This grounded theory study examined the caring behavior of the nurses. Six nurse staffs from the six different wards at a hospital in Bandung were observed and deeply interviewed. The data was analyzed thematically. The result identified seven themes namely concern on fulfilling client’s need, responsibility on fulfilling client’s need, friendly and hospitality, calm and patient in helping client, readiness and willing to help client, give motivation to client, and empathy to the client and the family. This research suggested the importance of continuing education, effective direction and supervision to establish the culture of caring behavior among nurses.