Abstract A new approach, cosmicray radiography to study interior structure of the earth is introduced,which is the completely different method from the traditional geophysical observations.As a new method,the cosmicray radiography has been rapidly developed in the last years. Especially,the cosmicray μmesons are successfully used for observing interior structure of volcanos.The geoneutrinos are used to investigate earth’s interior thermal structure and some preliminary results were obtained.
