Abstract: In this study, the author tried to analyze the characteristics manifested by the primary school students (the 5-6th grade students) in agriculatural labour, in the understanding of the discipline to be observed during the work, and in the evaluation of their own and others' work. An attempt was also made to investigate the relationship among these characteristics.The students' understanding of the discipline are mainly reflected in the following three aspects: the students' behavior when working individually; their obedience to the discipline; and the spirits of collectivism, and these three aspects seem to correspond respectively to the three different levels (from the lower to the higher levels) of development of child's mentality. Both the children's manifestation during the work and their evaluation of their own and others' labour are closely related to these three levels of understanding of the discipline.Through this preliminary work, the author attempted to reveal the major psychological factors affecting the difference in the moral quality of the students, so as to give some suggestions for the educational practice.

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