This paper aims at finding out the effectiveness of Physical education subject in elementary school in wetland areas. This paper used qualitative and quantitative descriptive research. This paper took the entire schools in wetland areas (around Banjar and Baritokuala Regency) as the population. The sample of this research was taken by using a purposive sampling method. This paper used the assessment instrument of the teacher’s ability, which focuses on the learning stage (Pre-, during, and Post-) and interview guidelines. The data obtained were analyzed using quantitative and qualitative descriptive analysis. The results found that the Physical education subject of elementary school is ineffective. This paper found several points as contributing factors, they are: (1) environmental factors, (2) school management factor, (3) teacher factors, and (4) customary factors. Kata kunci: effectiveness; physical education; wetland; keefektifan; pendidikan jasmani; lahan basah