The present invention relates to an automatic injection syringe for plants, and in one aspect, the present invention provides an automatic injection syringe for plants, including: a main body which stores therein an injection solution a needle which is inserted into a plant body and configured to allow the injection solution in the main body to flow out to the outside an injection unit which is disposed in the main body and defines a storage space for storing the injection solution an elastic member which is configured to move the injection unit inside the main body toward the needle when the elastic member is released from a compressed state and a releasing unit which releases the elastic member from the compressed state.
