Determining the factors that influence intentions towards organic farming (IOF) is a challenge. This research applied the theory of planned behaviour to determine factors which influence farmers’. There are six causal factors: attitudes towards farming behaviour, group-norm influences on farming behaviour, perceived behavioural control of farmers, comparative usefulness of behaviours, perceived of risk of farming and support of government policy. The purpose of this article is to explore the influential factors for conserving and cumulating organic farming behaviours, which are compared between organic and conventional rice farmers. The result provides government agencies with an outline of how to increase organic farming, especially for smallholder farmers, and the long-term benefits will decrease poisonous contamination and increase human health