The objective of the present study was to analyze the communication process tools triggered in group activities in the Family Health strategy. Data collection was performed using semi-structured interviews recorded with 51 nurses and through non-participating, non-systematic public observation in natural situations of 19 group activities analyzed according to content qualitative approach. Based on the reports of the professionals, two categories emerged: dialogue-action and dialogue-interaction, which evinced that the communication process is an instrumental means of group activities in the Family Health strategy. The former by the predominant use of verbal language as a means for developing operational procedures specific to each professional in relation to monitoring the health of the client, and the latter as an instrument in which, according to the nurses, there is a simultaneous use of verbal and nonverbal communication.