Abamectin microcapsule suspending agent and preparation method thereof

The invention relates to an abamectin microcapsule suspending agent and a preparation method thereof. The abamectin microcapsule suspending agent consists of the following components in percentage by weight: 2-10% of abamectin, 10-35% of a solvent, 2-10% of a wall material, 3-4% of an emulsifier, 3-9% of a dispersing agent, 0.1-2% of a stabilizer, 0.01-0.1% of a defoaming agent and the balance of water. The invention also provides a preparation method of the abamectin microcapsule water suspending agent. According to the abamectin microcapsule water suspending agent provided by the invention, polyurethane or polyurea formed by a polyurethane polyisocyanate monomer or modified polyisocyanate and a natural polymer curing agent is used as a wall material, so that the abamectin microcapsule water suspending agent has good biodegradability and is also a very good plant growth promoting substance; and the abamectin microcapsule water suspending agent has good processing stability, storage stability and ultraviolet