The invention relates to the technical field of biological detection, and discloses an in-situ detection method for the
tissue level of a
protein and phosphoinositide compound, which comprises the following steps: providing a to-be-detected
tissue sample containing the
protein and phosphoinositide compound; incubating the sample to be detected by using a primary
antibody mixture; incubating a product obtained in the previous step by using a second
antibody mixture containing a PLA probe, and reacting to obtain
circular DNA (
Deoxyribose Nucleic Acid); carrying out in-situ amplification by taking the
circular DNA as a template; and acquiring and analyzing a
signal of the detection probe. According to the method, the interaction between the
protein and the phosphoinositide compound can be specifically detected in situ at the
tissue level, the actual state of the protein and the phosphoinositide compound in the physiological and
pathological processes of cells can be more truly reflected by the technology, and more accurate information is provided for researching the function and regulation mechanism of the protein and the phosphoinositide compound; wide application prospects are realized.