Device and method to determine the quality of a meat product comprising an identifying element that identifies said meat product by means of the emission and/or reception of an identifying signal of the meat product, said identifying signal comprises at least predetermined puncture requirements and/or a puncture depth (z¡) in the meat product, positioning means configured to displace a head, where said head is disposed at one end of said positioning means, and comprises an insertion element configured to be inserted inside said meat product at a predetermined puncture depth(z¡), and measure at least a pH signal in a predetermined measurement point (x¡, y¡, z¡), the puncture point(x¡, y¡) being predetermined in accordance with a prior analysis of the anatomy of said meat product by means of an artificial vision device that determines the puncture point (x¡, y¡) in accordance with the predetermined puncture requirements and anatomy of the meat product.