The article studied the connotation, characteristics, mode and the independent degree of independent innovation. The most important characteristic of independent innovation is independent which includes initiative, dominant power to obtain and control the innovation property and innovation income. Independent innovation is a kind of technological innovation to which should be paid out great creative endeavor. Independent innovation has more efficiency than technological import, it is safeguarded by independent intellectual property, and should adapt to the development of itself. At the technological level, the independent degree of innovation can be evaluated by the proportion between the value of following patent technology and the total value of all patent technologies. At the firm, area, industry and country level, it can be evaluated comprehensively by the proportion between the value of technology input, intellectual property right, innovation rent and the total value.