The invention discloses an accelerator control device of a micro-cultivator. A mounting base, a locating plate and a spacing plate successively arranged from bottom to top are penetrated and fixed by the same adjusting bolt; an adjusting handle is installed between the locating plate and the spacing plate and covers on the adjusting bolt; the adjusting handle is provided with an accelerator stay wire; a spacing snap ring is arranged between the mounting base and the locating plate and is integrally composed of a left clamping part, a middle fixing part and a right spacing part, wherein the middle fixing part is fixed between the mounting base and the locating plate; the left clamping part is clamped on the locating plate; the right spacing part is positioned on one side of the handle partof the adjusting handle; and the left clamping part and the right spacing part are positioned on the same side of the handle part. The accelerator control device can better realize that the micro-cultivator can be reliably accelerated, idled and stopped, thus improving the maneuverability of the micro-cultivator. The accelerator control device has the characteristics of good safety performance, low manufacture cost and the like, and is simple and convenient in operation.