Aim: identify factors and obstacles that interfere in the nurses' work process in the Psychosocial Care Network. Method: an exploratory-descriptive study conducted in the period from October to December 2017, in the components of the Psychosocial Care Network of a district health management in Porto Alegre, RS, Brazil. Twelve nurses participated by means of a semi-structured interview. The information was transcribed and submitted to content analysis in the thematic modality. Results: Two thematic categories emerged from the analysis: Work Environment and Obstacles to the Performance of Work. Discussion: violence, poverty, structural scrapping, barriers to urban mobility, demotivation, queuing and work overload, form a poor health system for the poor, producing discontent in nurses, since the needs of users and workers to perform care are disregarded. Conclusion: each problem is considered as the cause or consequence of the identified difficulties. Humanized care must come from the destabilization to face the hostile reality.