<p>Cu–Ti alloy, as a typical aging strengthening alloy, possesses the high strength and wear resistance, widely used in engineering applications. However, the conductivity of Cu–Ti alloy significantly decreases when the content of Ti exceeds 4 wt%, which is due to the scattering effect of lattice distortion of the matrix on electrons caused by the difference in atomic radius between Cu and Ti. The precipitation of in situ dispersive nano-Cu–Ti–O compounds particles and heat treatment is expected to reduce lattice distortion of matrix and improve the strength of materials. We employed Cu₂O as the oxygen source to generate oxide particles to reinforce Cu–Ti composites through an internal oxidation process. The influence of solid solution time on the microstructure and properties of nano-oxide-reinforced Cu–Ti composites is explored, and the composition of oxide particles is Cu₂Ti₄O with a size of approximately 100&#xa0;nm, which has a good interface bond with matrix. The strength reaches 675 MPa when the solid solution time is 16&#xa0;h, and the strengthening mechanism and conductivity improvement mechanism were discussed. Actually, Ti atoms precipitated as β′–Cu₄Ti and Cu₂Ti₄O, reducing lattice distortion of the matrix and increasing electrical conductivity after solid solution and aging treatment. This study provides a novel approach for preparing nano-oxide-reinforced Cu–Ti matrix composites.</p> Graphical Abstract <p></p>