Abstract: The urea-formaldehyde(UF) adhesive is the most important adhesive in industry of wood-based panel. The present situation of UF adhesive for wood based panel is introduced. The existing problems in UF adhesive for wood-based panel were discussed. One of the most important problems is the pollution to environment and does harm to the health of formaldehyde released from production. Formaldehyde release from wood-based panel is influenced by a lot of factors. One of the most important aspects is the urea/formaldehyde mole ratio. The quantity of formaldehyde release from wood based panel is markedly influenced by type of UF adhesive. The methods to reduce formaldehyde emission of UF adhesive are introduced. The possible ways to improve the production level of UF adhesive are also put forward.