The invention provides an interleaving phase-shift control method for a photovoltaic inverter and the photovoltaic inverter. Interleaving control on the control quality is realized; and an input current ripple amplitude value is reduced by prediction control and time compensation strategies in the control process, so that the design of an electro-magnetic interference (EMI) filter is simplified. Relatively low filter capacitance and boost inductance are permitted to be adopted by increase of the current ripple frequency, so that the size of the overall system is reduced; and the power density of the system is improved. The overall system is relatively uniform in thermal stress to obtain relatively high reliability; meanwhile, the thermal loss of the system can be reduced; and the service life of the overall system is prolonged.