Improved tree cutting sickle

The invention relates to the technical field of branch pruning devices, in particular to an improved tree cutting sickle which comprises a sickle head and a connecting rod which are connected with each other. The connecting rod is a telescopic rod with a telescopic length; a sickle and a hook knife are mounted at the top of the knife head; the second end of the sickle extends in the direction awayfrom the hook knife so that the sickle can be in a crescent shape, the cutting face of the sickle is arranged downwards, and a plurality of sawteeth are arranged on the cutting face of the sickle. The second end of the hook knife extends in the direction away from the sickle so that the hook knife can be in a hook shape, and the working face of the hook knife is arranged downwards. The highest point of the working surface of the hook knife is higher than that of the cutting surface of the sickle. According to the tree barrier removing device, the tree barrier can be directly removed on the ground through the connecti