<p>This article proposes a dynamic, tunable, multifunctional metasurface (MFM) based on phase-change materials and graphene. It features a small size, dynamic tunability, angle insensitivity, multifunctionality, and multi-mode absorption. By adjusting the temperature of vanadium dioxide (VO₂) and Ge₂Sb₂Te₅ (GST), as well as the bias voltage applied to graphene, the electrical conductivity of the three materials can be modified to achieve three significant functions: absorption, transmission, and reflection. In particular, when the MFM is in the state of absorption, the device can realize five different absorption modes. One of these modes can achieve an absorption rate of over 90% within the broadband range of 4.4–17.6 THz, with an average absorption rate greater than 98%. The working mechanism of the MFM is explained using impedance matching theory, equivalent circuit theory, and electromagnetic resonance theory. Additionally, this paper investigates the effects of different polarization and incidence angles on the performance of the MFM. The results show that when the incidence angle is within 0°–50° or the polarization angle is within 0°–90°, the absorber can still maintain good light control performance.</p>