Objective: To evaluate the effectiveness of a pilot program of psychological treatment in complicated grief. Material and Method: A group therapy of complicated grief carried out in 20 sessions, with biweekly frequency. The participants were 6 women received psychological treatment in the Palliative Care Unit. The group was homogeneous in terms of severity, type of process and chronology of the loss. They have been evaluated before, during and after the intervention with the following psychometric scales: Inventory of Complicated Grief, Hospital Anxiety Depression Scale and Beck Hopelessness Scale. Results: Significant improvements in complicated grief and depression symptoms were found from baseline to depression posttreatment, four of the six participants were asymptomatic at posttreatment. Conclusions: group intervention can be effective for complicated grief.