Despite numerous studies on multifunctional agriculture, the development of this practice in developing countries, including Iran, remains uncertain. The purpose of this qualitative study was to analyze the underlying factors limiting multifunctional agriculture in western Iran. The study population consisted of 12 purposefully selected experts and farmers involved in multifunctional agriculture in Dehloran Township, Iran. Data were collected through semi‐structured interviews, following a root cause analysis approach proposed by the American Society for Quality (ASQ). The analysis of the interviews identified 19 direct causes categorized into six groups, along with 234 superficial causes. Additionally, 12 root causes that significantly impact the problem were identified. Using the GUT (Gravity, Urgency, and Tendency) decision matrix and Pareto diagram for scoring and prioritizing, eight key root causes emerged: Absence of research laboratories. Inefficient supervision of agricultural processes. Lack of guaranteed support for all agricultural products in the region. Failure to promote multifunctional agriculture. Failure to formulate strategic policies based on regional conditions. Inefficient policies for training multifunctional agricultural experts. Lack of targeted support plans. Inadequate policy‐making to support multifunctional farmers. By addressing and rectifying these root causes, not only can superficial causes be eliminated, but also the development of multifunctional agriculture can be expedited.