Professional ideological and political education is an ideological and political education that combines professional education with professional characteristics and runs through the whole process of college education and teaching. Some scholars believe that the ideological and political education elements and functions of this major should be organically integrated into the overall goal, the whole process and all links of professional personnel training, which can not only enrich the ideological and political elements and functions of professional courses, but also make the ideological and political education of non-professional courses better reflect the characteristics of "teaching students in accordance with their aptitude". [1] Among them, ideological and political courses for non-professional courses should include ideological and political courses. That is to say, although ideological and political courses have distinct characteristics, they also need ideological and political thinking. Ideological and political courses must adhere to the correct political direction, otherwise it will be difficult to achieve the unity of value and knowledge.

It can be seen that professional ideological and political education is the unity of ideological and political education and ideological and political lessons. It is necessary to give full play to the role of ideological and political education in course teaching, make professional courses have the flavor of ideological and political education, and make ideological and political course teaching professional (in addition, it also involves "managing ideological and political education", that is, implementing student management with professional characteristics, so that student management has professional characteristics, which is not discussed in this paper).

Professional ideological and political education involves the main channel and position of ideological and political education in colleges and universities, and is closely linked with ideological and political courses and courses to form a whole of educating people. Only by comprehensively and profoundly grasping the specific connotation and important value of professional ideological and political education can we give full play to its educational effectiveness. Under the background of "double-first-class" construction in colleges and universities, "40 Articles of Higher Education in the New Era" put forward the call to vigorously promote the construction of first-class majors, emphasizing that majors are the basic unit of talent training and the "four pillars and eight pillars" for building high-level undergraduate education and cultivating first-class talents. Therefore, we should actively carry out professional ideological and political education, regard professional education and professional characteristics as the important foundation of ideological and political education for college students, make professional ideological and political education serve professional education and promote the growth of college students.

2. Ideological and political education foundation of professional ideological and political education.

First, according to the carrier theory of ideological and political education, the carrier of ideological and political education refers to a kind of ideological and political education activity form and material entity that carries and conducts ideological and political education factors, which can be used by educators and can be used by educators and educatees. [2(]P357) Because professional education is directly related to the content integration, strategy selection and mode operation of ideological and political education in colleges and universities, it can promote the interaction between educators and educatees, so it should also become an important carrier of ideological and political education in colleges and universities, that is, professional carrier. Curriculum ideological and political education is essentially a curriculum-based ideological and political education in professional education, and the implementation of ideological and political courses is also inseparable from professional carriers.

In addition, professional carriers help to coordinate the relationship between different channels of ideological and political education and make them give full play to their respective functions. Academic circles believe that ideological and political education has main channels and microcirculation, but the existing problems are that the main channels are overloaded and the microcirculation is idle, so it is urgent to activate the microcirculation and alleviate the main channels. [3(]P 146- 153) In ideological and political education in colleges and universities, ideological and political courses are the main channel, and professional education is microcirculation. Only by better stimulating the vitality of professional education can we give full play to the positive role of professional education in ideological and political education, enhance the affinity and pertinence of ideological and political education, and make professional education "manage the canal well and plant the responsibility field well"

Second, the theory of ideological and political education mechanism holds that "the mechanism of ideological and political education refers to the mechanism and operation mode formed by various elements in the process of ideological and political education in a certain combination way" [4](P258). In other words, the mechanism of ideological and political education focuses on the overall adjustment and operation of all elements of ideological and political education in order to obtain the best effect. Professional education is an important basis for coordinating all elements of ideological and political education, and the formation of a good ideological and political education mechanism cannot be separated from the promotion of professional education. In addition, the theory of demand satisfaction mechanism of ideological and political education holds that human needs are closely related to ideological and political education. People's needs exist objectively, and people themselves are the subject of needs; People's needs are still the initial motivation for people to engage in activities, and no other deeper motivation can be found after it. People's needs are also the motive force for people's constant activities and constant promotion of activities "[5](P206).

Therefore, some scholars regard personal needs and social needs as the logical starting point of ideological and political education, and believe that the realization process of ideological and political education is the process of mutual unity between personal needs and social needs. [6] (p10) It can be seen that people's needs cannot be ignored in ideological and political education, and an important reason for the poor effect of ideological and political education for college students is that their needs for ideological and political education have not been stimulated and satisfied.

At present, some college students' demand for professional study is far higher than that for ideological and political education. In view of this situation, how to improve college students' demand for ideological and political education has become a problem that we should consider and solve. Professional ideological and political education can make college students realize the close relationship between ideological and political education and professional education, and stimulate their interest and demand for ideological and political education with their demand for professional education, thus effectively enhancing the effectiveness of ideological and political education.

Thirdly, the theory of ideological and political education environment holds that the ideological and political education environment refers to the sum of all external factors that have an impact on the formation and development of ideological and political education activities and ideological and political education objects. [7(]P 10 1) Among them, economic environment, political environment and cultural environment play a decisive, guiding and shaping role in the formation of people's ideological and political quality. [8(]P 196-20 1) As an education that runs through college students' study and life, professional education will inevitably have an important impact on college students' ideological and political education from the perspective of cultural environment. The micro-cultural environment constructed by professional education is closely related to the ideological and political education of college students, which plays an irreplaceable role in shaping the ideological and political education and moral quality of college students. Therefore, ideological and political education in colleges and universities should consciously face up to and use the professional education environment, actively integrate into the environmental atmosphere of various professional education, and make professional education contribute to ideological and political education.