The material economy is the economy with the material resources as the main labor resources. The primitive economy is the primitive material economy, the agricultural economy is the economy based on biological material resources, the industrial economy is the advanced stage of the development of the material economy. The knowledge economy is relative to the material economy The new economic form is an economy based on knowledge resources. The prerequisite for establishing a knowledge economy is the high development of the industrial economy, which is based on science and technology, so there is no high development of science and technology. And widespread application, the material economy cannot be transformed into a knowledge economy. Based on this, can it be launched? ['If science and technology are highly developed and widely used, the material economy can be transformed into a knowledge economy.', 'If the material economy cannot be transformed into a knowledge economy, there will be no high-level development and widespread application of science and technology.', 'Only when science and technology are highly developed and widely used can the material economy be transformed into a knowledge economy.', 'Only when the material economy is transformed into a knowledge economy can science and technology be highly developed and widely used.']