Grandparents observation deep into the family of children left the village d, data collection and carry out social work services, observation of life and communication status of left-behind children and Grandparents who provide relevant basis for the study. In the case interviews, should always observe the expression of left-behind children are grandparents and guardians of language and non-verbal, as well as changes in mood and behavior among mutual interaction of reaction, to seize the key information they reflect, ready to collect information about the service object most direct and truthful information. In carrying out group activities, to participate in the entire process carried out by the group, to be observed before the members of the group to carry out, to carry out the reaction and after the change of conduct, grandparents and grandchildren at the same time to observe the interaction in the group , as well as changes in the activities, so as to develop aspects of the activities according to the actual situation or to adjust the service plan.