The invention provides single-phase load automatic phase selection equipment. The single-phase load automatic phase selection equipment comprises a primary side circuit and a secondary side circuit, the primary side circuit comprises a multi-phase circuit and a relay set connected to the multi-phase circuit. The secondary side circuit comprises a control chip IC which is connected to the multi-phase circuit and used for achieving a phase selection function. The output end of the control chip IC is connected with three single-phase conduction loops which are controlled by the control chip IC toachieve selective conduction. The control chip IC is provided with input ends L0, L1, L2, L3 and L4, output ends C0, C1, C2 and C3 and a communication line, and the output end of the control chip ICis connected with the relay group. The voltage of the input end is detected through the control chip IC, and the selective conduction of a subsequent circuit is controlled, so that partial or all single-phase loads can be selected in the transformer, the three-phase loads are automatically balanced, the workload is reduced, and the use efficiency of the transformer is improved.