The invention discloses a garden pruning saw. The garden pruning saw comprises a suspension rod and a pruning rod suspended under the suspension rod through a rope. A hanging hook capable of being hooked and hung on a twig is arranged at one end of the suspension rod. A carrying handle used for manual operation support is arranged at the other end of the suspension rod. An electric saw is mounted at one end of the pruning rod, and a control handle is arranged at the other end of the pruning rod. A control switch capable of controlling start and stop of the electric saw is arranged on the control handle. The garden pruning saw is simple in structure and convenient to use, one or two workers can support the suspension rod and control the pruning rod to prune twigs on a tree, the twigs at different angles and positions on the tree can be cut, and limitation of road conditions of the tree is avoided, so that application range is wide, pruning efficiency is high, and labor intensity is low.