Clamping and pressing type anti-leakage compression joint pipe fitting

The invention provides a clamping and pressing type anti-leakage compression joint pipe fitting comprising a hollow pipe fitting body, a seal ring, a locating check ring, a compression sleeve and an anti-leakage compression joint check ring. One end of the pipe fitting body is provided with a pipe connection section. The locating check ring is connected to the root portion of the pipe connection section in a clamped mode. One end of the compression sleeve is inserted into the locating check ring. The anti-leakage compression joint check ring is connected to the end, far away from the root portion of the pipe connection section, of the locating check ring. A guide groove allowing a pipe to be inserted therein is formed between the compression sleeve and the pipe connection section. A seal groove is formed in the outer wall of the pipe connection section and corresponds to the guide groove. The seal ring is arranged in the seal groove. The anti-leakage compression joint check ring comprises multiple claw blocks and multiple plastic sheets, wherein the claw blocks are close to the locating check ring, and the plastic sheets are far away from the locating check ring, and the identical sides of every two adjacent claw blocks are connected through the same side of the corresponding plastic sheet. The outer wall of the end, far away from the root portion of the pipe connection section, of the locating check ring is provided with multiple protruding blocks in the radial direction. The width of the gap between every two adjacent protruding blocks is larger than that of each claw block. Each protruding block is provided with a right-angled buckle located between the corresponding protruding block and the root portion of the pipe connection section. After a pipeline system is installed, the pipeline system is convenient to detect, and detection is rapid and accurate.