The invention relates to a bus electrode for a cubicle type gas insulated switchgear. The bus electrode provided by the invention combines a branch bus electrode with a closed electrode to form one body. Since a contact resistor is eliminated, hidden risks of accidents caused by a local temperature rise due to too large contact resistance are rooted out; at the same time, an assembling link is omitted so that the assembling efficiency and the assembling precision are improved; and besides, the electric field distribution of the bus electrode is obviously better than that of a conventional bus electrode, and the insulation performance of the switchgear is effectively improved. Under the condition that the same insulation property is satisfied, inter-phase distance and profile dimension of the switchgear can be effectively reduced, the land occupation area is decreased, and the purpose of saving investment cost is realized.