Based on the combination of literature related to virtual reality technology, physical education learning interest, and the impact of virtual reality technology on physical education learning interest, a blended teaching mode design with VRTECH technology as the dominant technology and virtual reality technology as the supplementary technology is carried out. Then, the accuracy of the influence of the blended physical education teaching mode designed based on VRTECH technology on students’ interest in physical education learning is examined, and table tennis class is taken as an example for instance analysis. The results show that the COSELM algorithm has the highest accuracy, and COSELM in able to adapt quickly in an unsteady environment. The T-test results of physical education learning interest in each dimension before and after the teaching experiment showed that the physical education learning interest in the experimental group would be significantly increased under the assisted teaching of VRTECH technology (T=2.15, P=0.032). The T-test results of the five dimensions of students in the -experimental group under the blended teaching mode were -4.25, −3.07, −2.11, −4.45, and −4.99, and the significance of the dimensions was <0.01 except for independent and inquiry learning. The blended teaching mode based on the VRTECH technology can give the students a novel teaching environment, and it can effectively enhance the student’s interest in physical education learning, thus improving the new perspective of students’ interest in physical education learning and providing certain theoretical basis and practical experience for the integration of virtual reality technology into physical education teaching.