The invention relates to a method and device for rapidly, easily and conveniently judging and analyzing whether the viscosity of the male seminal fluid is normal or not.A glass slide with a certain rough surface is adopted, the seminal fluid sample naturally flows under the gravity effect starting from the fixed position concentration of the glass slide with a certain inclination angle, whether the front flow end of the seminal fluid exceeds a marker line or not is checked within the required time, and whether the viscosity of the seminal fluid sample reaches the minimum standard of male fertility or not is judged based on the result.The invention further provides the device for executing the method and a kit.It is proved through comparative studies that the judgment result of the method and the judgment results of a pipette method and glass rod method of standard methods recommended by WHO have no statistical difference, and it is shown that the method can be used for rapidly checking whether the viscosity of the seminal fluid sample is normal or not and assist in evaluation of the activity of male sperms.More importantly, by means of the method, an examinee can perform operation by himself at a table, evaluation of the viscosity of the seminal fluid is completed, and reference is provided for further screening of infertility.