AbstractAt a summary of the four present measurements for the solar neutrino problem one receives for the quotient of the number of the really observed events and the theoretically by the standard solar model exspected value the result\documentclass{article}\pagestyle{empty}\begin{document}$$\frac{{\Phi _{\exp } }}{{\Phi _{theor} }} = 0.3325 \pm 0.195.$$\end{document}This says that in the mean only 33.25% with a possible mistake of 19.25% of the exspected solar neutrinos have been observed.If one goes out from the assumption, that the attempts hitherto proposed for the solution of the problem on the solar neutrino deficits as to be regarded as very unsatisfactory on the one side, while on the other the neutrinos of the β‐decay may not exist at all, this looks very troublesome. But there is another possibility of a new interpretation.One has to consider, that in connection with each theoretically until now assumed neutrino of β‐decay at the solar p‐p‐ and all joined following fusion ‐processes precisely one positron will be produced.Exactly this particle will with the probability 1/2 in a triplett state of fixing with an electron of the solar centre plasma at a binding energy of −2029.7 eV create an electric‐neutral duotron. This particle assumes fully, inclusive the very welcome factor 1/2, the rǒle of the theoretically dispensable neutrino. This can be regarded as the solution of the solar