This guide is designed as a support tool for technicians and farmers involved in actions to promote and develop agroecology. It is a follow-up to a first technical guide published in 2014 in the Democratic Republic of Congo as part of the DEFIV project, a food security project implemented by GRET, funded by the European Union and Agence franÇaise de développement.This guide features two partsThe first part presents the current context and issues of agroecology in tropical wet regions. Having demonstrated the limits of conventional agricultural systems, analysed the effects of deforestation, the green revolution and climate change, the authors specify the objectives and the principles of agroecology, and remind readers of the conditions necessary to promote it.The second part is very operational and covers the various agroecological techniques, which were tested in a tropical wet context with satisfying results in the Democratic Republic of Congo (DEFIV project), Cambodia (APICI project) and Myanmar (Delta and NRS projects). Firstly, the various agroecological techniques are presented, and secondly the plants used to implement these techniques are described. Naturally, techniques such as plant inventories mentioned in this guide are not exhaustive.