The aim of this thesis is develop an automatic control system of the tractor door with the remote system and apply it in development of the tractor door on the tractor cabmodel. This system idea, as an innovation, wants to help the tractor operator and act to increase ergonomics of larger size tractor. In develping of this master thesis two programs was used, SketchUp Pro 2016 tocreate 3D models of cabins and AutoCADprogram for making technical drawings of the cabin. In the workshop tractor cab model and remote control system of the tractor door was designed. On the topic of this master thesis a survey with farmers respondents from continental Croatia was conducted. At the end of the whole system development, a innovation which with its role and function simplifies the way of entry and exit from the operator's seat was developed. The main initiative for development the remote system for door management were the reasons that make difficult to open and close the door in the traditional manner (height of door lock aboveground level, a number of stairs, construction of stairs, etc.). This thesis developed two examples of the door remote control systems, using a lever and threaded rod, where is at the end the second example proved more effective. Through the entire thesis conclusions and the survey, the positive indications of accepting and supporting of introduction of the tractor cabdoor remote control system as part of modernization of the tractor is detected.