Don Ihde’s philosophy of technology， including phenomenology of technology，cultural perspective of technology and so on， focuses on the basic relationship between human and technology. His main contribution to philosophy of technology lies in the turn from metaphysical study on technology to study on problems of life-world technology， which is quite similar to the so-called “study on practice of technology” in our nation. However， the limitations of Don Ihde’s study are as follows: the study on relationship between man and technology is one-dimensional； his study paid too much attention to the ontological and epistemological level of technology rather than the essential part known as value of technology； and the object of his study is “technology” instead of “technological innovation” and so on.