In an information processing debugging apparatus, a debugger owns a debug information adding element and a data with type access instructing element. The debug information adding element gives data type symbol information of a data type from a debug information object file to be used by an information processing program in a program object file to be debugged. The typed data access instructing element instructs an access operation by using a variable symbol of the information process program and an added data type symbol information as a variable having a data type where an operator designates a variable of the information program. Such an information processing program which is not formed by a debug option is symbolically debugged without increasing the memory capacity. A practical information processing program such as a library which is not directly related to debugging operation can also be symbolically debugged.