It aimed at conducting detailed analysis for the text by free description about the image and recollections to co−sleeping using text−mining method in this research. Question paper investigation was conducted for a total of 424 college students, and graduate students. When the portion of the free description about the image of co−sleeping and the recollections of co−sleeping was analyzed by text−mining method, five image groups have been surveyed greatly. Physical comfort and mental comfort were suggested from the image group of co−sleeping. From the recollections group of co−sleeping, it was suggested that co−sleeping is one of the communications of the parent and child at the time of sleeping. In the position of co−sleeping, a negative word was hardly looked at by the image of co−sleeping also at recollections about those who were doing co−sleeping “next to the mother”, either
