Background and Objectives: Technical and vocational training plays an important role in the formation of human capital by providing skilled workers to the market work across the world. These trainings in the developing countries are not only responsible for training the workforce but also help solve the problem of unemployment by preparing the ground for self-employment. These trainings also have the advantage of short-term or medium-term efficiency, which is the reason that countries are paying more attention to technical and vocational training. Considering the role of expansion of technical, professional and vocational branches in production boom, job creation, and reduction of unemployment, it is very important to study the factors influencing this field. The aim of the study was investigating the challenges of spreading technical and vocational branches in the educational system of the Tabriz City, in order to identify the existing damages and take actions about these majors scientifically and expertly. Methods: The research was done using a mixed methods approach. The teachers of vocational schools in Tabriz (n=1028) were selected as the population of qualitative research and students of these branches were selected as the quantitative sample (n=14464). Twenty experts were interviewed in the qualitative section. The sample of students based on the Cochran's formula (373) were selected by a purposeful sampling method. Quantitative data were analyzed by descriptive statistics and inferential statistics by SPSS software. The research instrument was a researcher-made questionnaire with 17 items whose validity was confirmed by faculty members and its reliability was calculated with Cronbach's alpha (0. 82). Findings: After reviewing the interviews of the expert group, six main components were considered as the focal point of all branches damages, which include: 1-Curriculum (Teaching Methods, Educational goals, Evaluation System, Textbooks); 2-Management (Absorption in the market, inspiring motivation to study in these branches, force evaluation, relation with industry, existence of effective higher-order documents, decentralization); 3-Cultural field (media, group of friends and family perspectives); 4-Equipment and resources (Existence of workshop facilities, safety); 5-Financial budget (attention to the needs of the audiences and the amount of equipment upgrades); and 6-eacher training (relationship between training and real life, appropriate teachings and adequacy of tests ( Conclusion: In the equipment field, the main challenge based on the respondents’ views was related to lack of safety equipment with correlation coefficient of 0. 683%. In terms of curriculum and content, response to the needs of the audiences was undesirable (23/7%) due to neglecting local potentials. In the field of education improvement of human resources, lack of connection between trainings and real life (3/1%) and in the cultural dimension, inappropriate attitudes of groups of friends and parents (21/1%) were recognized as damages. In terms of financial resources and facilities, the amount of budget allocated to meet the needs of technical workshops has been very low (25%). The results of Pearson correlation coefficient in the student population showed that about 90% of the damages of these branches depend on the management methods. Therefore, it is necessary to train and empower the principals of technical and vocational schools and to design appropriate mechanisms in their recruitment according to their expertise and efficiency of the field.