Estimating the weights of foodstuffs and concentrations of salt and the sucrose in foods on the market is important for planning menus and carrying out a diet survey as a dietician. Whether female college students contemplating a career as a dietitian can change the visual estimation ability for the weights or concentrations and food consciousness by learning a special subject after a certain period of time was studied. What was additionally needed in the training was discussed in order to provide a more effective method of education.   The estimating capability tended to be improved after the training. It was presumed that it occurs due to from practical training or lectures of the special subject.   As a result of the survey, food consciousness and food behavior were significantly improved. It was proved that improving the estimation capability needed not only practical training to cook using a scale, but also execution to eat regular meals or maintain a balanced diet.   To acquire enhanced dietician skills, they should be provided a scientific basis for eating regular meals or keeping a balance and adopt healthy habits.   Moreover, it was proved that the students have to be first highly-motivated.