This paper aimed at clarifying the seasonal differences of nursery schools’ urban park usages in snow cold district, and analyzing the urban park attributes that promote or suppress nursery schools’ urban park usage. As a result, following points were revealed: 1. Nursery schools’ urban park usages obviously showed seasonal differences, in that frequency, means of migration and moving distance, 2. Types of infants’ urban park usages were classified into six according to their age, 3. Urban park usages of Type II and Type III not required the area of urban parks, but required the child-care workers’ visibilities in urban parks escorting the infants. And, based on these findings above, several issues of urban park planning which contribute to the promotion of nursery schools’ urban park usages were figured out.