The invention relates to a double-slug compound profile control agent for a tight oil reservoir and a usage method thereof, relating to the field of oilfield applied chemistry. The profile control agent is injected into the tight oil reservoir in a double-slug manner, wherein a front slug uses a part of hydrolyzed polyacrylamide of low molecular weight and additives so as to compound the profile control agent with low viscosity, strong fluidity and strong shear resistance, and the profile control agent is injected into the oil reservoir at relatively low pressure so as to block a crack system; a post slug, as a compound surfactant, is injected into the oil reservoir for surfactant flooding on unblocked hole channels after the front slug blocks the crack system effectively, so as to reduce the content of remaining oil in the oil reservoir and improve the water injectivity index of the oil layer. Due to adoption of the double-slug combined manner, the heterogeneity of the tight oil reservoir is lowered, the oil extraction degree is improved, the water injectivity index is improved, the water injection pressure is lowered, and subsequent waterflood sweep efficiency is improved, so that the economic benefit of the tight oil reservoir is improved.