On June 12, 1967, the first detector to land on Venus was likely to be the first to the landing of Venus. On June 12, 1967, the Soviet Union successfully launched the Venus 4 constant detector. From February 12, 1961, to June 7, 1983, the Soviet Union launched a total of 16 detectors to explore Venus and its surrounding space on June 12, 1967. In which Venus 4 was the first to direct Venus and send back to the ground heat detection data. Venus 4 launched on June 12, 1967, after a four-month flight, across 3,5 billion meters, reached Venus' orbit and its surrounding space on October 18, and then released a gold landing cabin to Venus. During the first 94 minutes of its burning atmosphere, Venus's surface heat and land pressure were also returned to the measurement of Venus