The invention provides a vegetable blocking preventing kitchen knife capable of cutting a vegetable into plurality of pieces at a time and relates to a kitchen knife. The rear upper part of a middle knife body (11) is provided with a handle (18); the upper parts of the middle knife body (11), one side additional knife body (8) and the other side additional knife body (12) which are arranged in a spaced manner at the two sides of the middle knife body (11) are correspondingly provided with holes (7) which are arranged in a spaced manner in the vertical manner and correspond to one another; fourscrews (6) are used for connecting the one side additional knife body (8), a partition supporting ring, the middle knife body (11), another partition supporting ring and the other side additional knife body (12) in series, and nuts (13) are used for locking the one side additional knife body (8), a partition supporting ring, the middle knife body (11), another partition supporting ring and the other side additional knife body (12); and long circular rings (20) at the two ends of an arc-shaped elastic rod (10) arranged between every two knife bodies are correspondingly arranged on the two partition supporting rings at the lower part in a sleeving manner. According to the vegetable blocking preventing kitchen knife provided by the invention, a plurality of outer knife bodies are connected in series, so the vegetable blocking preventing kitchen knife can be used for cutting the vegetable into a plurality of segments or pieces at a time, and the arc-shaped elastic rods can be used for preventing occurrence of blocking of the vegetable.