The outlook on scientific and technical innovation impetus is one of the important parts of Marx’s scientific and technical innovation thought. Marx analyzes the driving force of scientific and technical innovation from the following three aspects, that is the spur of the social demands, the driving motivation that the capitalists chase the extra surplus value, and impetus of the class struggle between the workers and the capitalists. Marx’s outlook on scientific and technical innovation impetus is of reasonability under the historical conditions of his times. Some of his viewpoints are of important guiding significance, while others have developed with the times and lost their theoretical glamour. We shall constantly enrich and develop Marx’s outlook on scientific and technical innovation impetus in accordance with the practical changes.